I got an old MTB, but the rear shift is a sam shifter but the front shift is a grip shifter, it is unusable and wrist is wanting, so Samshifter plus lever left and monotalou PB's ergo grip has been replaced with friction type shifter It is easy to adjust I am satisfied.
Installed on MTB of new car. It was a grip shift in normal, so this time, it changed to Samshifter. I changed to Sumshifter for both front and rear so I am looking forward to the future. Samshifter confidence, it's the first time, so I am setting it while enjoying the adjustment etc.