I think my brother appreciates the SIG's double action and the easy takedown, now that he's a "senior citizen." And he may have been influenced by a lot of experience with the M9 when he was in service, although in 9mm he always preferred the Browning Hi-Power when that was available.

He still shoots an M9 sometimes for auld lang syne, although he probably carried a 1911 and Browning more, in Vietnam and before. Don't know if he's ever fired the special one they gave him when he got his star, tho. Goes to his daughter, if she wants it.