What do you think of the Glock pistols? They work well for you? Can't help but notice you've listed one 45acp pistol on the list. I could say what I would do, and that would be stick with the same caliber for duty and BUG. The only thing I know about SIGs is that I love my P220 SAO. Everything else is Glock to me. I figure if you could carry the P220, then the G21SF my go very well with a G30 as BUG, and if you're footing your own bill on your duty weapon, going Glock will probably save you some money over the SIG combo. I'm just sayin'.