A lot of people have talked about replacing Breno Giacomini this offseason, or at least beginning the search for his future replacement. For the record, I am about as pro-Giacomini as one can reasonably be, but even I've said that drafting a tackle somewhere in the mid rounds this offseason makes sense- Seattle does not have much organizational depth at tackle right now, and Okung could revert to being injury prone at a moments notice. Sure, McQuistan could fill in, but McQuistan is a starting guard, and continuity matters. You can see how this isn't an ideal situation.
By contrast, Seattle may not be deeper anywhere on the team than they are at guard. Carpenter, McQuistan, and Moffitt are already starting caliber guards, and Sweezy will probably join them when he's been acclimated enough. Rishaw Johnson showed a lot of promise during the preseason I thought, especially for a UDFA. He didn't even make the 53 man roster because the team was already so stacked there.
PC/JS value roster flexibility. They like DBs who can play like LBs and DTs that can play DE and o-linemen that can play 3-4 spots on the line. The problem is, Paul McQuistan is the only guard we have right now that is truly roster flexible. Carpenter is more "Red Bryant athletic" than "Chris Clemons athletic." He moves well for a big man but not by any other standard. Weight was a problem for him last year at tackle and he looks bigger now than he did then. He's good at what he does, but not among his gifts is a quick lateral step, and he was abused for it on the edge last season. Moffitt rounds out the group and he is a pure interior lineman.
So with Sweezy being buried on the roster and Seattle needing flexibility/depth at tackle, why not think outside the box a little bit and start giving Sweezy practice reps at tackle?
Sweezy had some of the very best combine numbers of any of his O-line peers. IIRC, his 40 yard dash rated #1 among all OL, even better than Matt Kalil. He scored very well in agility drills too. During my preseason tape reviews I noticed that no other Seahawk reached the 2nd level faster than Sweezy did, not even Max Unger. I cannot say for sure that Sweezy would have the kind of lateral agility needed to play bookend, but if Giacomini has enough, I'd be surprised if Sweezy didn't.
Sweezy is listed as 6'5" some places and 6'4" at others (and weighs 298 pounds). Either one would make him slightly below average for height at tackle in the NFL- especially for Tom Cable who has a track record of drafting and starting very tall offensive tackles. In terms of height and size, Sweezy would be pretty comparable to Jordan Gross (6'4" / 305), and Russell Okung is decently close as well (6'5" / 310). Cable is a Gibbs disciple, and Gibbs talked about preferring his tackles to be almost exactly Sweezy's size. Gibbs himself handpicked Russell Okung for our team. So I don't think size should be something that rules Sweezy out for tackle, unless Cable is emphatic that HIS tackles must duck entering every doorway. Which if hypothetically true, would make the concept of G/T flexibility pretty difficult.
Arm length is a major factor for being able to play tackle. Sweezy has 34" inch arms, which is not elite but still well above average for tackles.
Sure, Sweezy is a converted DT who still hasn't mastered guard yet, but this isn't about having Sweezy start at tackle in 2013- it's about improving Seattle's in-house roster flexibility. He's showed that he's a fast learner, and with one professional season under his belt he'd likely acclimate to NFL tackle faster than a mid round rookie would. Not that there is anything wrong with doing both.
Maybe I'm off base here, but last year I looked at James Carpenter's tools and lean and thought "left guard" immediately. As Carpenter struggled at RT last season, the FO insisted that his future was at tackle. Then the offseason happened and the coaches and staff reviewed things, and it didn't take long at all before they changed their tune and rightly moved Carpenter to where he belonged.
I see some of the same potential for Sweezy getting moved. Sweezy has the raw tools to play tackle, and Seattle needs depth at tackle much more than needing a 4th guard. He might not provide value right away, but Seattle can and maybe should try and see, and if all goes well he might have a chance to compete for the RT job in a couple seasons, which would allow him to field some real value for the team as opposed to being a forgotten 4th stringer. At the very least, the team needs to find ways to improve their depth situation at tackle, and Sweezy is the best and most obvious way of doing so in-house. It's certainly worth a look next preseason, at the very least.