Ray - we use these jugs with our Scout Troop, talk about rough handling! I keep them in square milk crates which greatly minimizes handling/transport damage, plus you can flip the crate to have a handy water jug stand.
I've used them as well and in fact passed my three on to a scout troop. Anyone considering them should be aware that sometimes they seem to have a press-in vent plug and sometimes a threaded cap. People should be sure to get the threaded cap as the other kind will pop free under the jostling of driving off-road, and you end up with your stuff wet and a third of your water gone.
The only other negative thing I can think of about them is that they hold 7gals and thus get pretty heavy when they are full. A completely full 20L is right at 6 US gal.
I've got some legit milspec MWCs from LCI, They were (3) for $50, shipped long ago, I think they are up to $25ea now and still a good deal. And I've been likewise getting rid of other water containers in favor of the newer Scepter 'civilian' 20L jugs. They're 2/3 the thickness of the milspec and have a wider bottom for stability and cost $20 most places.
I'm almost entirely switched over to the 'civilian' Scepter 20L now. Keeping the metal jerry can and milspec MWCs. This pic is about 15mos old, after I re-worked the outside storage cabinet. The second pic is about 3yrs ago