Karen,
I hear ya on the "close-minded" aspect of not wanting to see cover bands of ELP and Pink Floyd -- that's how I feel about Genesis and that's why the very first time I saw the Musical Box, I was very skeptical. I will not see any other cover band though, honestly. What makes TMB so special is that they do the entire show -- beginning to end, using the identical set, etc., very well scripted, etc., and they stay in "character" throughout the show.
As for other cover bands, I don't care to hear anyone else sing Genesis songs in any particular order. (Just as I'm not fond of anyone covering Peter or Peter covering anyone else's songs -- but that's a discussion that has been put to bed now that SMB is finished).
I look forward to your review . . . your review of Greg's shows was fabulous!
I must share a memory of the Lamb show (the real Lamb show with Genesis, back in 1974). I was in high school and had seen the SEBTP show earlier in the year and was totally taken by this band, Genesis. I could not wait to see them again and when they were coming to Philly with the Lamb tour, I immediately got tickets for my whole circle of friends -- my sister Anna (who had also seen the SEBTP tour, so she was game), my best friends, Cass and Patty and my boyfriend, Bobby. So, all of us went to the show and I can actually still remember just about where I was sitting for the show -- we had great seats -- it was a "general admission" concert and we had gotten there early enough to be within the first 10 rows of the stage.
Although I knew the concert was for the Lamb show, I had no idea that Peter had cut his hair, etc., I thought he was so cool looking with his long hair and shaved head that I was looking forward to seeing him again (with that style in mind). Of course, I had been ranting and raving about Genesis this and Genesis that and Peter Gabriel this and Peter Gabriel that and Bobby would just let me go on and on -- he had no need to be jealous and he knew I'd get over it any day now!

Genesis took the stage and out comes this gorgeous man with short dark hair, wearing a black leather jacket, white tee shirt and jeans! OMG!!!!!! I could barely controly my hormones at that point! He was just gorgeous and I kept staring at him and finally said to Bobby -- that is not Peter Gabriel! But who cares?! He's is gorgeous! Well, I soon realized that it was, indeed, PG, and I am glad it was.
So, on the way home, of course, I drove everyone crazy with just how smitten I was with Genesis itself and esp. PG. I remember saying, I would go to see this band every single day of my life if I could!!! And I always remember Bobby saying, "Oh, Pat. I bet you this time next year you won't even remember the group. There will be someone else to come along. They're good but you will not be following them forever." (Paraphrasing here a bit, but the bottom line is that Bobby was never so wrong in his life.

Every single time I hear the Lamb, see the show (TM

, I remember that night -- thanks, Karen for reminding me of it here.