OK, I just got back from their show here in PDX...
Meh.

Really? Yep. When I heard the lineup of this band, I bought show tickets without ever listening to any of their tracks first. With JPJ, Grohl, and some stoner-metal dude, how could it not be awesome? Unfortunately, their music is a mess. There are almost no hooks, either melodic or rhythmic. It's nearly impossible to tell the melody of one song from the next, with only a few exceptions. Josh is a terrible frontman--he can't sing well, his playing is uninteresting and messy, and he has
no charisma.
JPJ is a god of course, but he hardly played any interesting or heavy or groovy basslines! He was just a loud thump along with the kick drum most of the time. The sad thing is, too, he had a collection of awesome-looking custom basses there, but they all sounded pretty much the same in the mix. The only exception was in one of their more rhythmically "open" attempts at groove, when he played a 10-string (octave pairs), he laid down a mighty tone that time. But even when he played the 8 and 12 string basses, those tunes didn't have any groove or space to hear him. And the opening tune featured him on what is probably the most awesome instrument ever invented: a glitter-red 10-string
slide-steel bass with a light show built in... I couldn't even hear it. His slide hand was gliding up and down the neck, but all I could hear was monotonous mud.
The best moment in the entire show was a bit over an hour in, when JPJ played a truly
epic piano solo. It was awesome! Very dynamic and interesting and complex, and it seemed like he was having fun. Too bad that was only about 5 minutes of the show.
You know who kicked butt the whole time? Grohl! I was never a huge Nirvana fan, and I don't care for Foo Fighters at all, but holy crap that man can play the drums! He looked like "Animal" from Sesame Street the entire time. He was a monster! As far as I'm concerned, that concert should have been booked as "Dave Grohl solo on drums, with piano interludes by John Paul Jones".
Anyway, sorry to pee in the Crooked Vultures lemonade here, but my mileage certainly did vary.