In reply to Barney Smith:
I was extremely skeptical about the usefulness of the connect, but have become a recent convert for some types of climbing. On multi-pitch trad routes I still just clip in with the rope and then abseil with a sling, but for moving around on alpine style ground (particularly when on AD style ground in a guiding context) they are super handy.
I understand what you mean about it being a minor faff to clove hitch in your abseil device if you're hanging on the lanyard already, but as you will usually be attached to the rope whilst doing this it should be easy to attach with the rope to take your weight off whilst you do this. As mentioned above, the usefulness of the Connect will be massively reduced if you have a knot/krab permenantly in it.
As an aside, I do think it's easier to do mutliple abseils with a connect instead of a sling, as it's super easy to get into just the right position on the belay, particularly when on hanging belays.