"This forum…..first answer: absolutely no problem. Second answer: oh my god no. Third answer: perhaps yes perhaps no. Unbelievable."
I think it depends on the education of the poster. When I got out of college I had a EE degree in analog electronic design. I thought I knew a lot. Then some time later I went back and got another engineer degree when I realized there was a lot I didn't know. Now with over 40 years of analog design, I have come to the conclusion that the more you know, the more you realize how much you don't know.
I do agree with the same length concept. Even if you don't sell them later, odds are you will change your system and have useless cables.
Robert