Have so one of my knife holster fabric belt adds a Velcro holster. Is so far unfortunately only stayed while trying. The Velcro on the detachable belt loop around the belt holds actually super tight. I could even sew pinch. Not suturable The burr on the rigid back of the holster on the other hand comes off constantly. Even by its own weight of Shank-diameter (about 100g). Because obviously fundamentally something wrong with the adhesive.
Is not my first failed attempt with this stuff. Did someday times good half a meter in each patch between my luggage rack and a mortar tub stuck. When slip resistance. Broke up there constantly onto the Velcro side. When it is cold, when hot, wet ... Hab's there at the time but pushed to the high shear stress and the low press-on pressure during processing.
In the last attempt I have now the Klette just once pushed back into place and the whole thing stiff Gurtholster thrashed thoroughly in all directions. Maybe it helps in my case, so what. The walking but I would not necessarily recommend it for more rigid substrates such as wood, metal or concrete imitation.
A third time I shall Tesa this stuff definitely only buy if the blister pack is accompanied by a Tesa adhesive remover and a tube of Pattex.