Nawrockiwrote a review of Ibis 742 Carbon Fiber 27.5in Wheelset on June 15, 2017
Familiarity: I've used it several times
Very nice. Exactly the kind of quality you would expect at this price. Removeable valve cores (I would say, "of course", but that's not always the case). Claimed weight is 1610, came in at 1600 on the nose. Takes centerlock discs, 6 bolt not available. I was told that the Torch hub was loud....not true....they are quieter than my DT Swiss 350 hubs with 18 and with 54 tooth engagement even after new grease. It's a quiet "angry bee" sound. I doubt anyone would find it objectionable. Riding over gravel is louder. If you spin one up in the shop it'll be louder than on the trail. I think once you put on a cassette and disc it dampens the sound down. The engagement is pretty near instantaneous as advertised. I have about a dozen rides on them with 2.6" Nobby Nics and with Rocket Rons. Both come in around 2.6-2.65" on these at 18 psi.
Something to consider when putting a tire on tubeless...The "groove inside the rim is offset. I found that, if you first put the tire on the side that is offset in and then move the bead out board, it gives you a better shot at getting that other side of the tire on by putting the bead in the groove...I'm not even sure that makes sense to me, but when you see the rim I think you'll know what I'm talking about.