Just got one in canvas, from MilitaryMart, as is much of my kit, and as a bag seems great and well made. The condition as Grade A or A+ not up to MM's usual standard, but serviceable: only a premium was paid for A or A+, but hey ho, it's all secure, and a wash has tidied it a bit. Will add a waist strap methinks..........
Nope, if you're going to add a waiststrap, DON'T use the MFH one for an ALICE pack...a combination of the width and positioning of the buckle on the MFH strap, don't fit if using the bottom triangular loops on the frame, for the waiststrap. One afternoon later and one butchered brand new strap later....no..... (update...after a LOT of faffing and butchery, I am now using this waist belt, and the pack is fabulous. The inside pocket will easily take a polish lavvu and poles, with plenty of space in the main pack....)
Maybe different ones out there work, but having spent as much as I did on the bag for the (what was!) perfectly good strap for its purpose, this one doesn't work/fit.
If I find another (dirt cheap) strap, I may? try again?