Personally, I think it will be fine. I haven't noticed any correlation between the size of the knife and the number of negative reactions evoked. The main trick is just to use it discretely - no flicking it open with your wrist/arm, keeping the cuts as controlled as possible, etc. And as far as office/urban carry, I'd say the 710 is one of the best if you want to carry a fairly big knife. For a knife its size, it's quite compact, slim, carries well, and slips comfortably in and out of your pocket.