I think it’s a good idea. I’ve only had strings (E/B) slip if I cut them a little short in the first place. They can constantly and very slowly go a little flat. This would be a good quick fix especially if you had no extra to just replace.I'm trying to figure out how that locks the string in place more than a regular wrap. How does wrapping around half a tuner post help more than just wrapping it around the full tuner? I've never had a string slip out of a tuner hole.
I'm always up for improving things, so just trying to understand how this works, and to learn from a pro.