LOL, I think it's fairly unlikely; just because I think I CAN write any pairing that doesn't violate my cross-fandom squicks doesn't mean I actually want to. *g* Also, in order to do it I'd either need a suitably out-there scenario or I'd need to come up with a way to make it work for me within the confines of canon and that's going to be more effort than I really want to put in, unless a plot idea jumps up and bites me. (It's been known to happen. *g*)
Re: Sam and John