Those compression straps are long.
Could a pad, like the GG NightLight Pad (sectioned torso-length or longer), or the Z-Rest (Z-lite, y'all know which one - it's that orange one that folds accordion style) be placed on the back of the pack and the compression straps brought around the BACK (instead of the FRONT like in the pics to compact the pack) to hold the Pad in place. If so, this would provide mega-cushioning to the wearer's back (it might NOT be necessary with the Jam^2???), and would free up pack volume if the user is NOT forming a v-frame by making a larger cylinder out of their sleep pad.
If i understood the Review, buckle gender won't be an issue here as it's essentially no different than when forming the Kompactor system, i.e. the straps still need to cross over and attach to the other side. The question here is, "Will they reach?"
Just a thought. Anyone have one of these packs & can comment.