if there was no one else around then I'd grab it. I wouldn't want to take something if the owner was like right around there. I'd definitely boil it or clean it with alcohol and salt. I mean the whole germ thing doesn't really bother me too much because how many times do you pass around a pipe with your friends? I'm sure your pipes are probably just as nasty and germ filled as any other pipe, although there's no telling what else has been smoked through the pipe so just to be on the safe side/get rid of that nasty resin taste i'd clean it up a bit.