I was doing another purely organic play-through (I seem to get bored and start over around level 25 or so, gonna try and play this one through to the end). Trying to play it by just focusing on opportunities as they arise and letting the circumstances dictate what the character turns into. It's pretty fun, and almost impossible to play the same character twice that way.
I started out as a scraggly little Imperial sneaking across the border. Kind of focused on light armor, one-handed, and block for the first ten levels. Around level 5 I discovered the Transmute spell, which began my interest in magic for profit.
Started out with the Companions, but a quest to the winterhold area and the whole Shrine of Azura sequence got me more open to the idea of becoming a full-on mage. Diligent college study and the occasional companion quest later...
... I'll walk into a room flinging fire bolts, cast fury at an opponent, fire breathe at anyone who gets close... then turn into a fricking werewolf.
The hell with sneaking.