I can pick out quite a few bass players...if not necessarily by their tone, but by their playing style. Mo Fitz stands out all the time....and he tends to use certain riffs/nuances no matter who he's playing for. Gouche, Palmer, and Reggie White are also stand outs to me. Sometimes I can tell if Morgan Turner is playing, but I only know him to play on certain artist's material anyways so
.
As far as my own sound? It depends on where I'm playing. I fiddle around a lot with my EQ depending on the room I'm in. My Cirrus has a specific character though, so i generally try to stick with that. Not trying to make my Peavey sound like a Fender ya know? Outside of that, I know I use certain riffs a lot, and I play a lot of progressions the same way, so I guess that's part of my "sound" too.