Well I bit the bullet and bought some! I guess it was a bit early to get much feedback on here. I contacted Kinesis and got a reply very quickly. So with birthday and xmas money burning a hole in my pocket I couldn't resist.
Best thing I've done for a long while - totally transformed the way I ride my 29er. It has to be said that putting any half decent set of wheels on would have improved the ride somewhat as I had a very basic set of wheels.
Weight wise the quoted values seem about right. Converted to quick release the back was about 1kg and front 800g on my very dubious kitchen scales. I saved nearly half a kilo overall!
I measured spoke tension on the wheels using a Park spoke tension gauge and they were very consistent with the exception of one spoke which was slightly out. I would say they are much more consistent than other wheels I've had - though most of my many wheels are much cheaper.
In the wheel jig one wheel was perfectly straight the other had a very slight side to side wobble and very slight up and down. I believe all would be classed as within tolerance - you only really saw it if you had the wheel in a jig. Everything seemed to be destressed - there was no groaning on first rides and wheels remained straight.
Front wheel conversion is by simply pushing a machined alloy bar through the front hub. Seems to work well, its a close fit and I can see how it should help spread the stress away from bearings. Rear conversion requires the through axle to be removed using two spanners and replaced with a smaller bore axle with screw on end caps, these are done up using allen keys. The thread is very fine so make sure you align them carefully. Undoing the rear axle means the freewheel detaches and lifts away so as I understand it the axle pre-loads the cassette bearing.
The rim strip is standard so you'll need some stans tape or similar to go tubeless. No valves, spare spokes or skewers are provided.
I'm currently running 2.2 small block 8s with tubes. They fit easily on the rims and when inflated the beads popped in nicely.
The freewheel when you spin it makes a nice sound but when riding I don't notice it at all much quieter than Hope.
I've only had a couple of rides on them so far. One around Cannock in the largely dry and one locally in mud. They feel incredible direct in that you stomp on the peddles and feel yourself surge forward. Climbing seemed easier - mostly due to rotating mass probably. I also found that I used to flatten through bumps on my 29er now I'm much more likely to pop of them and have some fun.
Hope this helps anyone think about these wheels.