After a couple of weeks of unproductive deer hunting I changed gears and hit the range and tried to throw down on this DERP thing again. HORRIBLE. Yet I shot some very nice slowfire 25 yard groups, 10-8 headbox standards, and FAST with a G17 and my G26. With the G26 from the draw to a single shot at 25 yards I could go 100% alphas in 2.5 sec.
But the DERP was an utter train wreck. This thing has my number and it's been educational factoring in GJMs admonitions about speed pressing at distance. Although I have it for a single, which I've done a lot of for a year, the DERP has my number right now.