I've got one. It had to go back to Sig because it wouldn't extract properly out of the box. Feeding however has been flawless. Sig paid shipping both ways and had it back within a week to 10 days. It's a shame it wasn't right from the get go, though. Trigger is a little over 5lbs but reasonably crisp. I personally prefer it to the small double action .380's out there.
I always liked the Mustang but figured I would get one of these instead because of parts availability, if needed, and much better sights. The night sights on mine, unlike most pocket .380's, are very nice and usable. It is still a .380 though. I haven't carried it and have been thinking about selling it because it just sits in the safe. It is too bad .380 ammo costs so much. I have the setup to reload it but haven't loaded more than a few hundred I think.