In an idyllic world I would only design jewelry that require no findings, clasps are such a nightmare if you are not a metal smith, and even if you are thee is always the mystery in how to connect the knitted piece to the clasp without too much difficulty and preparations, because after all we are here to wire crochet ! that's where the fun is, at least for me.
As the men in my life don't wear jewelry, I could never crochet them anything other than hats which I pushed to the extreme this year, making my son three hats and hubby just one.
Combining 2 wires when wire crocheting is nothing new, I often suggest it when someone wants to make a stiffer designs , which is always the case when making bangle bracelets , but sometimes also wiht tube necklaces .