Since I sleep in a hammock, both on the trail & at home, I have found the BA insulated to feel slightly cool in the low 50s & upper 40s (F), probably because of being suspended in air.
I'm excited to see this good report on this new, lighter pad, but I suspect that even though I also wear clothing as part of my sleep system, I strongly suspect it will need some insulation help in a hammock at those temps.
What if a person made a hole & added a couple ozs of down, then resealed the hole?
I guess a valve from Exped's D.A.M. might need to be used to allow inflating it by the stuff sack.