Purchased Nano in beginning of Dec. Have just over 400 rounds through it. So far it has FTF blazer 115 FMJ, Wolf 115 FMJ and American Eagle FMJ 115. It has digested Speer Gold dot 124 remington UMC 115 FMJ without issue. The most interesting failure has been 3x with Wolf failed to load even when magazine is fully seated. The slide pushes the bullet into the breech and gets caught without fully seating the bullet in the chamber. You have to physically pull the mag out to get it to seat.
The sights are nice, and I really like the feel, ease of maintenance and CC ability. Overall I really like the gun but it has not given my assurance of its functionality if it was ever needed in defense.
The good part is it has digested good ammo and that is what I would load for carry, however I would not expect the amount of failure to fires, failure to ejects and failure to load issues with any gun, even if it is new.