I think the coverage is ok, a bit annoying at times. I'm prepared to cut channel 4 some slack on the grounds that they've not gone the easy route and just got a load of old pro presenters like Jim Rosenthal etc, they've tried to be inclusive and in that way I think it showed courage. Turning sports stars into accomplished presenters is never easy, the beeb spent a small fortune on Lineker before letting him near a camera and even then he was rubbish to start with, C4 were never going to have the budget for that.
Talking of budget, the beeb can chuck a lot more money at these things so comparisons are perhaps a little harsh. Also it appears that there are a lot move events to cover in the paralympics because of all the different classifications, also there is a lot more British involvement so they are constantly having to dart from one event to another. Of course they would have more time if they wernt trying to show so many adverts which has been the worse part. With all the events and adverts its no wonder it seems rushed and disjointed at times.
So all in all, a decent attempt, particuarly because they have never done anything like this before. Personally I think its a very good thing that a national broadcaster with a limited sport history is prepared to essentially clear their schedules for the Paralympics, in the US not one broadcaster has ever brought the rights to show on TV, you have to go on-line to watch it.