Me personally I think it looks kind of flimsy, well they only showed one bow that is probably the basic bow you start out with and that bow looks flimsy has no character in it and the arrow just lays on the wood it has no thing for the arrow to lay on to shoot.
But again it's probably the basic bow I hope they have better ones that have cool designs and actually make you feel like a real archer.
Watch this video of Todd Howard playing a part of the game in a dungeon I think, and look at the bow cause if all the bows are like that I probably am never going to use a bow in the game.
http://www.youtube.com/watch?v=rSeJpAUE6gY
if you watched closely, the bow is on a slight tilt, while the arrow rests against his hand (and FYI most old age bows were like this)
It is also probably made out of a stronger type of wood (like Oak) meaning more draw strength required even though it looks flimsy itself.
this was also the case in Oblivion and Morrowind, in relation to how the arrow rests and plain wooden bows.