Interesting, if consolidated
I agree with another opinion: there is, on certain surfaces and conditions, a weakness in the bonding.
If the support material heats up (e.g. sun exposure, radiator nearby), or the surface is a bit porous, the clips will have trouble holding if the cables are too heavy and especially if they are twisted at an angle.
Knowing this, I immediately consolidated with a pre-glue (latex glue in my case) on the surface, before applying the clips.
But it is a useful set, and the fact that they are in pairs makes for a better guide if the pair is placed on the same group of cables.