Love these guys.
First off the golfus texture is really skin-friendly and makes for a delightful training session. That added to the fact that these holds, in general, are large and neutral makes them feel kinda slopey means that my training sessions saw more work capacity than just standard sloper training or pinch training.
Don't get me wrong these aren't a substitute for either of those, but these hold added another dimension.
I did find as the angle on the board increased I was able to set at the easiest on a 45 degree V5/6.
Excellent addition to my home trainer.