Strange at first, but very good!
After 30 years of using conventional mice, it's very strange at first, to say the least!
However, after a few days, you can pretty much get used to it, and my wrist which used to be painful every time I was at the computer for several hours has quickly stopped complaining since I started using this mouse!
After a few weeks of use, I still haven't found the accuracy I had with my old mouse, but it's getting close, and the relief for my wrist is well worth it!
I have to admit that the scroll wheel is a bit high in use, but nothing dramatic.