I own a Gibson SG and I was tired of mechanical vile green that break in less than two. I loved the shape of Rotomatic, so I have them installed on my guitar. I had the choice between normal and self-blocks, I took the car blocks, they do a good job!
You can play for hours without any detuning. I did a little test:
I played with my guitar many hours a day, and I had to wait three days to hear a false chord. The others were just detuned. I would do without hesitation that choice.