I do a fair amount of template routing. I have been wanting to get my hands on some of these since they were first announced. The videos only made me more sure I wanted some .
A recent Woodcraft sale brought them within reason given how much I use such things. My normal way of doing things involved changing type and format of toggle, foot type and obviously foot height adjustment depending what I was doing. It is common for me to use my 1/4" templates on 3/8" through 7/8" material on a given project. This involves a lot of fiddling with the clamps.
These work as advertised. I changed out their foot for one that works better for how I use the clamp. The original foot (which is very well made) is in the foreground of the second pic:
Set the desired tension (clamping pressure) and it stays the same regardless of the thickness of the material within the operating limits. Grab a piece of paper and I can lift the white oak and MDF jig by it.
Without changing anything on the setup, I can go straight to a 2" piece of stock.
I would recommend these to anyone who regularly uses these types on clamps.