Right, I managed to muster up a few hours to try out Aion before the closed beta was locked and beta testing terminated. I ended up rolling a scout. :-)
Initial impression - it's a 2009 version of Oblivion, with the ease and familiarity of shortcuts resembling World of Warcraft. I didn't have enough time to learn any particular skills so my combat experience is hardly worth disclosing. :-)
I look forward to it's next step though, release scheduled for September.