I've not really tried it, and I'm happy without it, even an uncompensated Tele tunes well enough for Rock and Roll at band levels (you could even say the tuning discrepancies are part of Rock n Roll)
However, I can see it might be pretty usefull for studio work, I've found with the few bits of session work I've done that intonation problems really show up when you're under close scrutiny in the confines of a studio.
If I ever get any more work like that I'd consider having a studio guitar well shielded with the Buzz Feiten system.
It's unlikely though as I'm not really up to scratch for demanding studio work :?