From looking at the photos on the Hermes web site the 50mm deep wheels look to be made by Equinox, the same company that makes (or made) wheels for Cole, Xlab, Token and many other second tier wheel brands. Not that there's anything wrong with them, I had a set myself last year that held up fine and were as aerodynamic as any other 50mm deep rim, just that they aren't unique.
Based on that, there's no reason to think these climbing wheels are anything other than branded Equinox wheels. They should be fine, but I wouldn't put them in the same category as Edge, Campy or other first tier wheels when it comes to quality control.