ReynardFox: It does, but as I never want to let myself become reliant on internet features I disabled it. Yes I can see the irony in that.
Mister.Wolf: Makes sense, you were being consistent. And you'd have no way of knowing that the uninstall behaviour would be so over-reaching (doing so without a prompt is very unintuitive, regardless of what one may think of client A or B). Hope you manage to still have fun with the game, independently of platform, despite the bad experience caused by a third-party.
Well I do have the GOG versions of the Batman trilogy from when they arrived here, so I guess it's time to start from scratch with Arkham City. Probably for the best really, I bet the EGS version's save data wouldn't be compatible with the GOG version anyway and I'm glad to be rid of it.