I attended a protool/festool demonstration about a month ago where the collated screwgun was demonstrated. It had some very nice features, but also some drawbacks.
Major drawback was, that according to the protool rep doing the demonstration, it doesn't have the grunt to screw OSB/underlayment. (they will have a corded version out soon too, that will be suited for that).
Couple of things I saw that I liked about it were that it was very quiet in operation (especially compared to the makita corded version I use myself). And I really liked the belt hook. It has an angled, non-retractable belt-hook on one side, and on the other side it has a folding hook like the thing that is called a rafter-hook on some american tools (I saw it on pictures on nailers, worm-drive saws and reciprocating saws), with this hook you can hang it from a ladder, or scaffoldrailing.
The trigger is also quite special, when the tool is set to drive screws, it only works if there's pressure on the bit. (when it's set in reverse it doesn't need this pressure). It can also be set like the "bump-action" on a nailgun. This system makes it capable of driving more screws per charge than competing brands, allthough it's only a 10.8V battery and the machine runs at 4000rpm.
One of the other features is that the guide for the collated screws can be easily dissassembled without the use of tools into a few parts, one of which is a big spring, that's big enough not to get lost if it decides to jump somewhere. (This dissassembly is necessary, for easy cleaning of the thing, because drywall dust makes those things slow in bouncing back into position, and thus slowing the work down)
Conclusion for me after this demonstration is that they probably won't make a depth-set chuck for the protool quadrill-centrotec system as they have for the festool fast fix-centrotec drills. And that allthough I really liked it I'll stick to my corded makita (but finally going to order the attachment to be able to screw down flooring while standing up)