I did this past weekend. I filled in for the band I had left to join my current one and we played two nights at a venue we had played a lot when I was with them before. There wasn't anything particularly bad about the gigs (in fact the second night in particular went really well)... but by the end of the weekend there was no doubt in my mind that I had definitely upgraded. The gear, the venue, the crowd, the "hang" within the band... everything is so much better now. On top of which, it was pretty clear that some of the issues that had caused me to leave the first time were still handicapping the band more than a year a half later. Anyone else have the same experience?