Great White were a great blues-rock band, that just hit pay-dirt with that 80's cover song like so many of their contemporaries... go and listen to anything they did post-1991 and it's heavy on acoustic guitars, indepted to both 60's-era blues and Led Zep, and not just in your face choruses and riffs.
Terry has that raw voice, but with a higher pitch, which I think will be perfect for Great White, and I can't wait to hear the band progress. He's definitely a better fit than Jani Lane if the lawsuit against Jack is anything to go by, and isn't as gruff as Paul Shortino (who has a VERY bluesy voice, which i'm assuming people here would have really hated!).
Niv