I ve just bought the Holosun SCS MOS for my G34 defensive pistol. I work with him 30 minutes for each 3 days ... combative close scenario and some competition drills in the garage and in the garden....to compare with the SRO for IPSC.
After that I returned the SCS to the store and don't waste time and ammo for checking at the range. I ve reinstalled my former RMR type 2 3.25 MOA.
Pro for SCS vs RMR: price, size, stay lower, very good for sunny day, easy to find the dot for shooter accustom with red dots
Against: no manual adjustment, the dot and circle has a little double image, the double sensors work very bad in my garage with the light on, too little setting button, not combat proven