BFD2 has a sampling option in it, which I have not yet used. But I would imagine that with some tweakage, you'd be able to play others' samples. It might boil down to having to re-record them with BFD's sampler rather than drag-&-drop, but you'll get there one way or another.
Sometime soon I plan on sampling a couple drums and cymbals myself, and when I do, I will post some comments. I used to do this WAY back in the day, when the DM-Pro was the hot module (maybe 8 years ago or so). I had sampled my Tama Starclassic Maples and some Zildjian Ks, in 4 velocity levels each. It was pretty minimal, but it SMOKED the stock sounds, for sure!