So, first the caveat that it’s still just pulling on edges, it’s not going to be radically different to a campus rung. With that in mind…
Some context: the reason I bought one is that I have a bit of an issue with my finger lengths when training a half crimp. For me, my pinky is usually straight, and the edge sits nicely on the crease at the end of the first joint. This can support a lot of weight, but it’s unpredictable. I could just use a front 3 of course but that can get tweaky. I was hoping the MXEdge (TM) would fix that.
However I’ve tried the unlevel edges and for me they do share the load out more across all the fingers. I’ve gone back and forth about if this is a good thing. I can see arguments for and against.
However, where I REALLY like the lattice edge is for awkward grips - back 3, full crimp. Full crimps in particular feel much more natural and comfy than on a flat edge. I’d be happier training these grips on this board than a standard fingerboard.
The block itself is a nice design. Surprisingly it works as a pinch quite well too, although they are obviously shallow pinches. It’s stable and doesn’t tilt. The mono is nicely done and doesn’t get in the way.
What’s not as good? Well it costs a lot of money. Also there’s nothing to stop you using a normal edge and placing your fingers on it the same way! This would be less repeatable, but a lot cheaper.