Isn't the Sig 1911-22 just a "rebranded" GSG 1911-22?
Yes, same gun. I have one and I'm very pleased with it. It has a better than expected trigger, is more accurate than I expected and thus far very reliable with all the ammo I've fed it. When a gun beats my expectations I'm happy. My only complaint is the takedown takes longer than some other fun pistols.
The 1911-22 isn't as nice as my Buckmark Field 5.5, but I didn't think it would be. Thge Buckmark or 1911-22... either one a good buy worth the money IMHO.