That looks like a great set-up. I use that NRGS kit alot, in fact I feel kind of naked in the bush without it. It is handy having it all right there all the time.
Blind Horse Knives recently donated five of their Tiger Knapp neck knives to my wilderness ministry and I'm in the process of setting four of them up as neck knife PSK's. I gave one to a good friend here.
I'm glad you found the concept useful, it really has worked well for me.
Mac (aka Colhane)