Hmm, that's very interesting to hear. But as others have said the PTC have always been specific about what they do/don't do. I'm not too surprised though, every tech tells me they're a pain to work with. I currently have two guitars with SS frets, one being a PRS and I personally love them.
The first benefit for me is galling. I don't know if that's the real official term for it, but that's what EVH calls it so I stick with it. I do quite a bit of consecutive bends on the same fret with my play style and with most guitars the string ends up catching on the fret after the second bend or so as if there was sandpaper. While the newer PRS frets suffer less of this, SS eliminates this problem completely. Another is the fret life. They never need to be leveled again, and they always feel polished. The tone difference is minimal and fairly negligible imo, so that doesn't bother me.