I also asked Hope a couple of weeks ago and got a resounding NO!
I have the On-One reetards and for the money, (mine were £99 with Nevegals and tubes) you really can't complain. They seem strong, but, they are heavy. My set weighed in bare at around 2.4KG for the pair. I've just ordered a set from Justridingalong. The new Stans ZTR Hubs, DT Comp sokes and Stans Arch rims. Going tubeless with Bonty Mud X's. Back of a fag packet I reckon it will save 2 – 2.5lbs and save it where it counts most. The downside is its going to cost me the thick end of £400 which stings a bit when the rest of the Scandal was so reasonably cheap!
Hopefully delivered next week, so I'll let you know if they make a difference, I hope so 😳