We have a DPP currently mounted on a 19MOS being evaluated for Agency issue. Its probably been 3 months now, 2000 rounds. Not enough time to get a full evaluation complete but here are some thoughts so far. BUIS are Dawson 310-194.
Running the same drills using the same holster, Safariland 5188, my times and scores were about even. Its been banged around on the ground, roll over drills etc. No drop tests conducted although I have knocked it into door frames a couple of times. No shifts in zero due to the handlings.
Pros:
Bright dot, easily adjustable once you get used how to do it.
Window size makes finding the dot a little easier than RMR , subjectively.
Fits in my 6378RDS ok-ish(See cons)
Cons:
Holster fit:
For proper co witness BUIS, the front sight height is like .485. Its tall. Caught a wee bit on my 6378RDS at first but now it doesn't. I'm guessing it shaved off enough to not catch. It doesn't fit in my Keroman holster nor Perun.
Battery:
Installed a new battery , Duracell at the beginning of the eval. Still on the same battery. It is NOT currently being carried in a duty holster full time. I've started coaching one of my guys on it and once he is confident in carrying it , he will start carrying it full time on duty which should give a more realistic battery life test.
Dot Size:
I carry a RMR06 on duty so the dot seems a little big to me but I'm used to a 2 MOA dot on my pistol and carbine. I have a RMR07 installed on another 19MOS to issue out for evaluation so we shall see.