Yes the HEX solves all the chord issues.
I just got into it, I love it.
GK-3, I built a direct break out cable that goes into a multi channel audio interface.(no GP-10 needed)
I purchased a soon to be discontinued Scarlett 18i20 3rd generation, you can pick one up now for half price since everybody is making room for the 4th generation.
I got mine from Thomann shipped to the US.
The reason I went with a direct cable solution is that I am on a PC and having two ASIO devices is a no go. I was told that you can still do it with ASIOforALL driver but I am very happy with the Scarlett driver (paired with Reaper I can go down to 16 samples without any problems)
More info about the direct break out cable: