I also have one and have been using it for over 4 years now. I have tyed few thousand flies on it and it is still like new. Not a single problem whatsoever! I normally tye small flies for trout -#14 to #28 - with the regular jaws. I also tye some bug criatures on the same jaws, up to 1/0 hook size and never had a problem there either.
I would certainly recomend it since I'm a happy camper with it.

Martin