No real reason, actually...Plaits should also work nicely given that it can sweep through changes in a generative system. Its predecessor, Braids, didn't exactly have that ability. It's also worth noting that I put this together about a day or so before Codex Modulex dropped their 8 hp version of the Plaits...given that, I'd suggest that if you go with Plaits, use theirs, which would allow you TWO of them in the Rubicon2's space with 4 hp left over.