Shot my 17.5 with EPS in an RDS pistol course this past weekend. Had meant to split time with that and the 17.5 with ACRO P2, but bailed on that plan (will get into that more when I have time for a more complete report). Shot a total of 900ish rounds over 3.5 days with the 17.5 EPS and no issues with the optic, or the gun that wasn't induced. Wasn't expecting any issues with the gun, but I didn't get as many rounds with that gun prior to the class than I had planned on.
Overall, I was impressed with the EPS. However, I am currently looking into other options. Including optics that have yet to be released, as well as due to controls on the EPS that I noticed issues with during live fire manipulations. I could adjust some things too eliminate what I noticed, but will have to consider that moving forward.
The class has a variety of RDS sights being used. Most prevalent were 509T and SRO, with a number of EPS and RMRs and one shooter with ACRO. Didn't hear of any RDS failing. One thing of note with Holosun models with side battery tray, the screw came loose on one gun and the guy lost the screw. One shooter noticed his battery tray screw needed tigthtening (by 1 1/2 turn). When I checked my EPS, I could tighten by 1/4 turn, but not sure if it came loose. I checked on it here and there over days 2 and 3, but didn't notice it coming loose.
There were a few shooters shooting Staccatos, I think mostly the P. One was an ACRO and I think one had an SRO.