The F# he's talking about is his 5th string - an octave higher than what it sounds like you're thinking of. 56 is on the heavy side for a low E, so it's probably way too tight on his guitar another whole step up.
I've had my baritone down at drop G before just for fun, but I never took the extra half step plunge to F#. It didn't sound that great even with good strings and a 28.5" scale length. EQ is a whole different animal when you're down that low, everything needs to change. Lately I've come around to tuning guitars up higher and leaving more room for the bass. I joined a band who plays in E standard last year - the first time I've tuned up that high since the mid 90s! - and I miss the low notes sometimes, but not as much as I thought I would.