Didn't know where to share this exactly. Random is fitting.
G3 (Satriani, Morse, Petrucci) are on tour down here. I got the chance to hang out with two guys of crew on Monday's night. To my surprise, one of them was the lighting tech/designer of STP. So according to him:
1) Robert wrote half of the new Aerosmith record (I was already excited about it, now WOW, I'll wait to see the credits)
2) He's a close friend of Eric, they go biking together (or something like that)
3) He speaks all the time with Robert and Dean. "They're so cool" and showed me a text Dean sent him! (so so so bizarre and exciting)
4) No connection with Scott at all. I got the impression he did not like him so much hehe but probably it was that he did not have much to say either.
5) "Robert is a better guitar player than Dean" -dixit. You could tell he's amazed by Rob's talent.
6) "So you're the girl who did Dead and Bloated?! such a small world"
It was this guy
http://www.belowempty.com/forum/index.php?topic=3384.msg48666#msg48666