For years, I ran a clipon with a Wilcox shoe and a Wilcox picatinney flip shoe mount, in front of a Trijicon Accupoint 1-4. In MANY ways, I prefer it to dedicated sights. I could see a coyote, mount the clipon quickly in that shoe mount (in the dark), and shoot the critter. It isn’t for everyone, but if you like having day/night use from the same gun, without monkeying with your day scope, it’s the way. If you’re swapping between guns, picatinney/shoe is the way….not ocular….unless all your oculars are the same. Crush cups between day optic/thermal are your friend for light signature, as well. Flip up cover is all you may need on your day scope, as it reduces the backlighting common with dedicated sights. It’s also nice to be able to change your magnification on the day scope end, with regards to resolution. Don’t have to worry about zero, which gun it’s set for, etc on your clipon. The only concern is ensuring focus/parallax settings on the clipon are spot on, or impact CAN shift.