Just to report back. I received my NS bikes Enigma Lite Boost wheels. On my scales they measured 1680g with rim tape and those band things, a bit heavier than expected, but I’ve had worse between quoted and actual weight. Wheels feel quite stiff for what are quite flexible aero spokes. Certainly stiffer than my current DT Swiss M1900s. Freehub has 30 point engagement which is good enough for me. I tried to take the freehub apart – the NDS cap just pulls off, but you need a 16/17mm cone spanner to remove the DS (didn’t have one). On NDS bearing seal looked very robust.
I put on some Conti Racekings with TPU tubes and transferred cassette and rotors from my M1900s which had Vittoria Barzo 2.35s. Tolerances seemed tight when putting in the axles. In total there was a 800g reduction in weight. A little ride down the street in the dark and they felt very responsive in comparison. Will need to try on the trails.
For less then £200 they are a bargain and I don’t see any reason why they won’t last. They are the stock wheels on the $6000 NS Bikes Synonym XC bike and from all the reviews I’ve seen, no reviewer has commented on the wheels, which says something.