I shot my buddies and really like it. Role would be periodic concealed carry option for myself or my wife. The combination of its low bore axis, piston, and steel construction really seem to tame recoil. The trigger is nice, its easy to stay on target, and a pleasure to shoot.
Also considering Styer S9 (low bore axis and good trigger) and not yet released Walther CCP with same fixed barrel / gas system but thumb safety.
Not sure I want to pay the premium for the paddle thumb mag release on the M8. Squeeze slide release is also an efficient feature.