If not answered already, and for anyone that truly wants to know, the question of whether the treatment is permanent was asked on WBF. For QSAL, it is permanent.
I have only updated my network with QSAL cables and since I have IPTV, it benefits. The color saturation has improved and text has become clearer. I have an older Samsung 4k TV and the effect on 1080p channels being upscaled to 4k automatically by the TV is noticeable. With IPTV, overly compressed 4k channels weren't as nice as a Blu ray but 4k channels now look significantly better although I still haven't had a chance to compare. But most channels are 1080p anyways so it's a nice boost. Now I don't feel the urge to upgrade my TV as much. And even audio via IPTV has improved. I will add an HDMI cable soon.
I will also try a QSAL power strip in the near future.

