In reply to stupot2:
Here's a couple of my recent threads that may be of use:
http://www.ukclimbing.com/forums/t.php?n=581735
http://www.ukclimbing.com/forums/t.php?n=586497
I've only had one trip out with them so far and havedone some leading, lowering and abseiling on them so far. Have belayed a second up, but not belayed a leader.
They were fairly slick through the belay device. However, I was using a Bug, with 8.5mm being right at the bottom of it's operating range (see second postabove ). I've bought a Bugette to give a bit more bite to the belay.
Tying off was fine - not sure what the concern would be if you do a decent knot? Out of the bag they are a bit wiry and slippy feeling (probably to do with the dry coating I'm guessing) but a few people have mentioned that this eases once they see a bit of use.... which is exactly what I have planned for them this weekend
Mike.