I own Elecom M-XT2 and M-DT1.
The wheels are awful, each in a different way (one creaks and wiggles a ton, the other one is way too stiff), which isn't surprising, considering that Elecom has used extremely cheap generic parts, that I've seen in some no-name $7 mice.
The shell isn't different from the cheapest OEM mice either. I see similar texture longevity as on Microsoft WMO/IME or run-of-the-mill ABS keycaps—five months in and the top feels nasty, when my hands a bit sweaty, and I don't even sweat much/aggressively. Ugh. I love the coating, that Roccat uses.
The whole thing is cheap overall, and not even polished as some gaming mice, which are still consumables. A comparison to CST isn't even fair, because they're a completely different class (and this
Again, trackpads are always an option. No click stress on most of those.
Ugh. That's like saying, that a touchscreen puts less stress on fingers than a physical, say, laptop keyboard.
Tapping on a hard surface is perhaps even worse, at least for joints. I've considered going the other way around, though, and using Cherry MX in a trackball like sordna did with his mice.