my biggest gig was doing video for the Lepps on their 2005 us tour, they are so much better live than on their overproduced recorded output. I agree on the steve clarke/Phil collen comparison, but steve's replacement Vivian Campbell is pretty amazing. the rest of the band never soundchecked, but every day Viv would give us crew an amazing half hour solo blues improvisation show, the highlight of which was often an awesome half speed ballad version of Lizzy's "Don't believe a word" you never really got to see his talent in the show though as he was required to play steve's parts note for note, the only time he was let off the leash was for the last 8 bars of "Love bites" which I would look forward to as he would do something different every night.
and Joe is not just a Mott nerd, he's a full on 70's rock geek, when you get into conversation with him about bands he likes he sounds like a rabid fan not a rock star, I remember him jumping up and down with glee like a little boy when he heard they'd got Cheap Trick in to do support for a few shows.