Not an answer to your questions but the local gun stores report that they are selling them at a brisk pace. The SIG and the HK VP9 are flying off the shelves and the Glocks have taken a back seat at this point in time.
RS
Same here.
Not sure if you've handled one but the trigger on the SIG is fugging incredible. The full size is $650.00 with tritiums.
Travis
PS, dont pay 650.00, I'll land one in to your FFL for les than that, even after transfer fees.