That might be one of the stretchiest arborist ropes on the market. It’s likely a poor rope for SRT climbing, but it will serve for DdRT. I’m certain the HH2 will work with it though, but you may have to make adjustments to the hitch. See how it performs if you start your wraps from the front or from the back, maybe add another wrap or try a different hitch altogether.
I’d really suggest some type of 24 or 32 strand anyways, there’s a ton of choices. The Arborplex is a fine light rigging line though. I got a bunch that’s pretty glazed but I abused it a bit. Should probably throw it away but was thinking about weaving an outdoor or shop rug with it for fun