i use gaastras X bar for over a year now, it is previous model to X2.
it differs from X2 mainly by the colour of the CL and the shift adjuster. older ones are blue, X2 has a blacks.
X2 doesn't have o-shit handles and has longer floaters.
it is actually the first gaastra bar with the functioning bar ends bungee line organizers (at last!).
lock on the shift adjuster is holding really fast, in fact i don't think everyone is capable to unlock it with the wet fingers. you most probably need some thin piece of metal or hard plastic to open it, which is a good thing imo - no risk of involuntary unlocking. well anyway, i didn't need to change the bar throw a lot. it stays pretty much the same as it was right from the bag.
never had problems with the magnet QR, not a one involuntary release. once the QR picked up some 2mm steel debris and had to be cleaned, but same have to be done with the traditional mechanical QRs when some sand grain gets in it. swivel works fine.
never experienced the rear lines get caught in the clam cleat
i can not even imagine how it could happen.
as for the bar diameter or above bar clamcleat, i don't care, i'm a big guy. smaller guys can always buy slingshot bar
depower line runs around the small diameter pin in the quick release swivel. it is the only thing i'm not happy with. you better check the depower line in this place every now and then, looks like it's the place where it could wear itself until it breaks some time eventually.
but in all i'm satisfied with this bar. in fact i bought same QR and same clamcleat with shift adjuster for my self-made race bar. you can always modify its high Y front lines to normal length, no problem.
PS: and of course the bar ends colours are not for the red-blue combination lovers, it is black(left)-white(right)