You guys should watch some interviews with GTF and you'll understand the music, the outfits, etc. Their parents raised them on old blues records, Zeppelin, Deep Purple, etc. and they kind of gravitated towards that with their playing style, etc.
They are more than just a band thrown together to rip off Zeppelin. Three of them are family and a friend playing drums. They are working on an album right now and that will be the make or break in my opinion. I'm hoping they break off a bit from the Zep vibe and just do some great music.