Good document, I hadn't read that before. It makes perfect sense too, supply was difficult enough, adding another bureaucratic layer, especially one as independent and unaccountable as the SS would be insane... the SS were fanatics of the first order, but they weren't totally nuts. (well yes, they were nuts, but sort of like North Korean nuts... fanatically insane but coherent within the framework of their ideology...)
Another document in English about weapons and the SS.