Oh yes! While I still have a couple of .45 1911's (Colt and Kimber), I have five SIG .45's: a P220, P220 Carry, P227, P245, and a P250 compact. I too find shooting the .45 in a SIG a pleasure.
P.S. - I do have a SIG 1911, but it's a 10mm, not a .45ACP.
P.S. - I do have a SIG 1911, but it's a 10mm, not a .45ACP.