I got mine, and I think I did a few things wrong. The cable works absolutely fine, and I'm more than pleased with it, but I ended up frying my USB OTG cable because I misinterpreted the wiring instructions.. The sleeving included was unfortunately a few inches too short for the cable provided, but I cut the cable to the correct dimensions and it worked alright. The shrinkwrap also had some trouble shrinking to the size of the wire as well for some reason, so I gave up and left it without.
I feel like I'm maybe not competent enough to try something like this again, but I'm satisfied with the finished product anyway.