Decided to give Summoner a shot last night in a Aby-Mis party to test out Ramuh's new bp Shock Squall. From what I had heard and read on the forums, I was surprised that the bp went off in just about 1 second and the AoE stun effect lasted just about 6-10 seconds (my summoning skill still needs some work >.< so maybe it'll last longer with higher skills). Overall, I enjoyed spamming Shock Squall paired with Thunderspark for the Stun + Para + damage effect, leaving enemies mostly unable to act :P.
I have yet to try out Carby's new bp, but would like to hear what others think about the new moves SMN has. At least for me (since I'm baised towards Ramuh anyways), I know I'm gonna have a blast using SMN.