Unless you are serving people who are vegetariansBut how would they know what's in the beer lol.
mageac, I was curious why you carbonate with sugar if you're kegging. I still bottle, but everyone else I know who kegs force carbonates.
I've never tried gelatin because I've read it will take flavor out of the beer. I do use Irish moss, and haven't had any chill haze problems, yet.