I started using it when I was running Fedora, the version of the driver in the repository (xorg) wouldn't let me have hardware acceleration. Had similar hiccups when I switched over to Ubuntu, so now I only ever use the nVidia version of the driver.Not yet, but I still consider it a potentially viable option. I've resisted it up to now only because it continues to confuse me relative to the Mint driver manager. I still have it bookmarked.
Admittedly that computer no longer gets used enough for me to know if there's any problems or not, but for 3 years it was my only computer.