Thanks tablecloth ala dunelm it's exotic π
No the knot would be fine no different to any other I don't think I use the gemini tidy stems and they fit a fox lead which has a 5.75mm bore with the insert removed so it should always free the lead on a break, maybe it could be neatened with a short length of silicone or tubing to cover the loop and knot might be OK but that would need to be the same thickness as the stem so the lead didn't catch on it, as Charlie said gemini do connectors, i couldn't find one that may just neaten it up a treat