I?d very very HIGHLY recommend doing so, they are wonderful. My LGS just got their first batch of the the thumb safety models in as well.
I want an NRA edition in desert sand so I can slide swap it onto my black one and have two two-tones.
The 15 round magazines are out for it also, I received a few this week from sig. they look goofy as all hell, (to me) but they?re very nice.