I am sure it is not new Brandon as it is a kinda obvious solution
. I don't have any particular problems getting the uni to bite although the second thread-through jumping out of position can be annoying and takes a bit of getting used to.
You can try either the Trilene or Clinch knots with a double thread but I think they are harder to form in heavy leader than a uni-knot. That being said, Adhek uses a double threaded Trilene all day long. But then again he does that for living and is very used to tying them on a daily basis! I am very clumsy-fingered in comparison.
I am sure you correct about using a twistie. I just don't like the disconnect it creates between you and the lure. That's always a trade-off I realise.