Has anyone used or been around anyone using the Walther P22 / Gemtech Outback Combo? I have been thinking about getting one of these, but want to know how quiet the Outback Suppressor is. Are we talking cap gun quiet, or quieter? Can you use sub-sonic ammo and still cycle the weapon? I was thinking this would be a cool purchase because then I could also have the barrel of my 10/22 threaded and use the Outback on it also. Opinions, comments, and observations would be greatly appreciated.