Very pleasant
From my point of view, it took me 3/4 days to get used to it before it really worked. But once I got the hang of it, it was a delight!
Minus one star, because after barely 1 year of use, 5 days a week, the two space keys are showing signs of wear, the coating is starting to come off and the surface is smooth and shiny.
The ALTGR + # combination isn't necessarily very practical either.