Have had a set to try out for a while. They’re great, smooth tracking once you’ve ingrained the use of the levers. A little heavy for dragging round all day. I’ve had two downsides- the pointed feet rattle out (loctite fixed that but I lost one in the process), but they spend a lot of time horizontal in the back of a pickup on forestry roads.
Biggest downside was a liquid leak (oil I presume) from one leg. Best guess is they got too hot. They were in the back of the pick up under a tip top and laid flat, came back to them, one leg covered in oil and the smooth moves now feel like sand in your sun screen. Still work as fixed sticks but that’s not their USP.
The tops don’t suit rifles with flat forends, and the tops all swivel on the set I have (don’t know if that’s deliberate) which means I can change the shapes to suit the rifle of the day. This can be made so that the butt is clamped in place by a little compression caused by the spread of the legs. If you’ve one rifle I’d play with it and then glue it in place, as my tops need checking/setting each time the come out.