I'm not the world's biggest Jin fan, but I am a supporter of Johnny's, so I wanted to catch Jin since he was going to be (reasonably) close by. I think he did a really great job bringing his own style to the show. it's such a big break from the usual Johnny's concert format, but he seems like he's enjoying putting this tour together. The songs sound great, but I think they'll sound even better when there's an actual album. If you like hip hop, pop, and R&B, you'll most likely enjoy what Jin has to offer.
Oh, and the kabuki-style dance number they do is really awesome! You have to see it to get the full effect!