Personally, I would love to see the R&D notes and discussions that were had in designing this (and the original) Buckmaster.
From what I gather watching a couple of youtube videos or reading a couple of blog entries from SEALS that used the original, they didn't like it. Like the HK Mk23 it was a well done tool that answered all the calls but in use ended up being too big, too heavy, and too cumbersome and so wasn't well liked.