Having spent a LOT of time wearing MOLLE gear.
The Camelbak falls under the "ok" but not spectacular crowd.
The quick-detachable armor carrier systems with MOLLE on them are pretty much the way everyone is moving, like HSGI or Eagle makes (the Eagle CIRAS is excellent).
In your situation, there's several rigs Eagle makes that are sort of like modernized LBE with MOLLE. Our issued DF-LCS rig is actually based off of them, and it would probably do fine in your situation (ammo and gear when you need it, but not attached to the armor) and they have quick release fastex buckles everywhere just in case of the situation Biscuitsjam mentioned. A plate carrier (panel of MOLLE front and back with side clips) would accomplish the same thing, with a bit more real estate up front if you prefer, like I do, your stuff centrally mounted.
Check out www.tacticaltailor.com
If there's enough of you, most of the companies (especially HSGI/TT) will custom modify or make something for you, if you explain it well enough.