Been using them since they were invented.
Still use them on all my basses after the "factory" set dies.
Yes they can eat frets if you use the roundwounds, fret with a lot of pressure and/or vibrato/bend(rubs the string across the fret parallel to the string windings).
They do spit out an inconsistent string now and again. Over a couple or few
decades, I've had maybe 5 dead or wierd strings that just didn't sound like they belonged to the set.
Here's what using them on a 64 T-Bird for a little over 10 years of practicing 3~ 4 times per week for 4 hours plus 3 gigs per week looks like. This bass got used so much my thumb wore out a hole into the wood of the body:
WARNING: picture below taken before the bass was brought in for repair....snapped off headstock shot! I've included this picture to show what a bass that has been played for hours per day for a decade will look like fret-wise....but then ask yourself: Do you still play the same bass you played a decade ago? If you did, wouldn't it be worth the $$$ to feed it brand-new frets?
After all....Geddy Lee, Chris Squire, John Entwistle, Martin Turner, Greg Lake, and all the other Roto-heads back then and now...have a wonderful sound.