At the Halloween USPSA-ish fun shoot last month, I did three runs, using a stock G17 (well, stock plus gadget). The first two runs, I used a handheld, neck index, with finger lanyard to facilitate the one reload I had to do. Worked ok, I guess—although I wish I had a @NHshooter wrist lanyard at the time. Wrist loop > finger loop. The third run was interesting. I decided that there was more than enough ambient light: coming in through the back bay windows; the spooky strobe across the room, etc. etc. to see the targets. I was right. Too bad that the Stock 17 didn’t have a front night sight. I still got some good hits; the flash from the first tap helped center the second on each target.
Anyways, I’m now a believer in a front night sight. And a wrist lanyard.