If this is some kind of resident evil game, or any type of games where you play a civilist, os just buy weapons on your own as a civilist, than I love wheelguns (my fav gun in HL2), but for a specmil sim I doubt it is a good idea.
Even if those guys in INF are merceneries, I doubt anybody would use a wheelgun as sidegun. It needs to be fast reloadable, thin and a good mag capacity, nothing a wheelgun has. But who knows.
Mercs are high professional ex military, military orientated forces, who of them needs a whelgun.
I just don't want to seeing INF freaking out, the .DE is allready freaky enough (hope it wont be in INF:Source).