In my house? No, not at all.
In other peoples house, yes, all the time.
In restaurants, some yes, some no. Went to an all you can eat steak buffet once, I was looking around and seeing everyone sawing at their steaks (they wasn't the best cuts, but they was beef), I pulled out my 14 and took off. The guy next to me, looked over, got a big ass smile on his face, and ThwaK! out come his folder.
Then, a brief chorus of Thwaks!!! came out, as everyone dug in and got a good knife.
Then, there was the time, that I went to use my Gerber Gator II to cut up a piece of teriyaki chicken at at chinese restaurant, had grease on my hands from the chicken, and when I went to flick it open (wrist snap), I slung it half open up against the ceiling, and across the restaurant, coming to land on a table full of ladies. Whoops.
Moose