My Palette Expert kit came in yesterday.
For Lightroom, it is really nice. For Capture One, not so much. There's no support for the hardware sliders. The knobs appear to be a "direct connect" vs keyboard shortcuts, however they have very limited support. The buttons are the most "mappable", but the expert kit comes with only two. I think three should be the minimum.
Bear in mind that Capture One support is only in the beta stage. If they can get it to the same level as LR, it will be amazing.
You can map out several profiles for one app and toggle through (with a button). You can have one profile for culling, one for sharpening, etc. But again the support is so limited its not much use (in C1).
Now as far as keyboard shortcuts, yeah it supports that perfectly.
I have mapped out profiles for Photo Mechanic, Safari and my mail apps. It will automatically switch profiles as you switch apps. Very slick.
Now back to the hardware sliders. If you like listening to music while editing, it is a great volume control. I mapped one of the sliders to handle system volume for every profile.
Also, you may want to opt for the pro kit, kinda wished I did.