and although the webbing may have been more modular, i had nothing but problems with mine. being a trucker i never could find a way to make it work the way i wanted it to...
Getting in and out of vehicles is a bit of a pain, yes.
The magazine pouches were too inaccesible in the prone.
You think that's inaccecible? Try going prone with the TV, armour and plates. The plates allow you to roll laterally(left to right), but there isn't much of a range of movement vertically, esp. with the back plates hitting your helmet. You can approximate this by strapping a stoveboard to your chest, going prone and then trying to reach the underside of the stoveboard.
Also, I can easily carry 15 magazines in my webbing mag pouches, or 3 C-9 drums with an extra c-9 pouch, and still have room for a radio, 2lt canteen and a few belts of 7.62 in the buttpack. All with issued pouches ( army doesn't pay me enough for me to buy my own kit just for training).
And I can still get at them in the prone
The butpack was an absolute pain in the...butt.
I can wear the buttpack with reasonable comfort together with a rucksack. I do agree the buttpack is rather poorly designed, there are <a href=http://www.tacticalshop.com/index.asp?PageAction=VIEWPROD&ProdID=745>better, more accecible models</a> on the market
And those plastic mounting clips and brackets were so poor that after a year I had to start stapling webbing components onto the belt.
A weakness, true enough, I keep my webbing well secured and maintained and I've never broken a pouch in the field. That stupid strap on the bayonet frog, however...........
There's ups and downs to each system, and YMMV. WHen I first joined I thought the webbing was an ill designed monstrosity too. Maybe one day We'll get something better?