I'm going to the same gig next month here in the UK. It seems to be that The Watch are being heralded as "the next Genesis" but I don't really see the similarities that much. As a band, I was expecting them to be amazing, but I was pretty disappointed after listening to their albums. Their music is ok, but the lead singer's (Simone Rosetti) vocals kind of grate on me a little. Some of their songs are pretty good, but there's no way in hell that they should be put in the same league as Genesis; their sound is really different in my opinion. A couple of their songs are on Youtube - have a listen!
I think they'll be good live though and I can't wait to see them performing Foxtrot