A few months ago I bought a Vortex Viper 2.5-10x and put it in a Burris P.E.P.R. quick detach mount and decided to zero both the scope and my EOTech for 100 yards and see how well they held their zero. I went to the range and switched them out about 6 or 7 times and shot a 5 shot group each time and they held their zero perfectly. I was shooting consistent .75 inch groups with the scope and 1.5 inch groups with the EOTech. Any of the one piece mounts such as Larue, Bobro, American Defense, Burris, etc... should work. And yes, I would feel comfortable not taking it to the range between changeouts. As long as you remember which rail slot to mount it on you should not have a problem. I mounted both the scope and the EOTech so that I only had the first two rail slots visible in the back. Hope this helps!
-Josh