Dang it just dropped $700+ on a Sig Romeo 8T. I'll probably pick up that magnifier though. Hell I will probably snag that M22 as well. Thats a great price hopefully they review well with consumers.
The M22 has an even worse washout problem than the M21. You will still need to get a polarizer or a REM 21 illuminator to see the reticle. The M22 is smaller and lighter than the M21 and therefore the FOV is smaller. IMHO stick with the M21.
"I was going to say what if you just want to run your sight and get 'this' (the magnifier) out of the way." Do you REALLY think that they don't have this on at least a flip to the side?! God you sound like such a scripted shill channel. No one asking the real questions about this optic, "will this require the same aftermarket upgrades to function properly as the m21 did, causing every consumer to pay more overall?"