Like others have said, it really depends on design/functionality.
If it is something like the Samsung watch that came out, plain old "watch" type design with a few phone-like functions cooked in...no.
If it has a "sexier" design, something like the Nike FuelBand, with more features worked in...maybe.
I can't definitively say that I will or won't buy/wear something I've never seen. I don't expect this "iWatch" device to look or function like a regular old wrist watch...I'm guessing it is a design/form factor that we haven't even thought of/conceived of yet. Until I know what it looks like and how it acts, I can't make a fair decision.