If you want to use it on Windows then they should be fine, as there are no Linux drivers for them and there were users complaining that they couldn’t even get these “extra buttons” to work with alternative drivers on Linux. On Windows, most users were happy with them, but a few reported that these “extra buttons” were not very durable and fell apart after 6 to 12 months of intensive daily use. If that is true? Time will tell!
I had looked into these models some time ago and decided against buying them because of the lack of Linux support.
The only downside is that it’s expensive ($80 to $300).
The image shows how I’ve customized it for Krita. It soon gets second nature to use the different knobs, etc.
For example, I use the scroll wheel for undo and redo. Let’s say I’ve drawn 50 individual hairs in an eyebrow but don’t like how it looks. I can quickly scroll them away with with the scroll bar.
You can also assign operations for double-clicking or combining the different buttons.
It’s one of the neatest devices I’ve ever purchased.
I bought one of these on Amazon for $13 (at the time) and changed the most used keyboard shortcuts to accommodate all the keys except “prt scr”, “num lock” and the calculator. If it ever breaks, your normal computers keyboard would be able to use the same shortcuts until you can get another. And with this, it can be used outside of a drawing software as its original intention, a keypad.