For full disclosure, here is the information I learned from my discussion with the designer of this set on their discord:
Ravarin's Plan A: Run this set with ePBT PBT Doubleshot around late Q2-early Q4, ePBT will send all designers of PBT Doubleshot sets samples before GBs.
Ravarin's Plan B: Run this set with JTK ABS Tripleshot.
I raised concerns regarding the sublegends requiring PBT tripleshot or reverse dyesub along with PBT doubleshot, along with progress of PBT molds. (ePBT ABS molds are currently extremely limited with kitting options and would not be able to create many of the kits on this IC). In regards to the mold progress, Ravarin said "we have seen photos of molds and progress I just cannot fully comment on what their actual ETA is." Apparently 40s molds are also in the works. Ravarin said there are no plans for PBT Tripleshot, and that "part of the [manu profess] is disclosed, part of it not fully yet" but Ravarin cannot speak publicly at this time in regards to the part of the manu process that has been disclosed to them.
My personal take: Let's wait and see. With a currently unknown manufacturing process and unknown GB date it's impossible to judge the set's potential manufacturing pitfalls without speculating. Just judge the design aesthetic itself and let's see how it goes.