I don’t think you’re right ir-bandito
If you slow the bike from the hub, there must be a total resultant force within the spokes equal to the force generated by the disc system. Seeing as 50% of the spokes have +ve length in the x-axis [trailing spokes], they will be under tension, the remaining 50% under compression.
Mary Hinge – no difference that you can see from the outside.
Anyway – I have work to do, and I suppose you’d be better off asking in a bike shop, maybe it’s in CYTECH somewhere?
Open Pros are great, but I don’t know if they are warrantied/safe to use with discs