For what it's worth, my CEFO is set up as follows (anti-clockwise from buckle):
Double ammo pouch, holds 4 Steyr magazines
Utility pouch, holds 58 Ptn water bottle, metal mug, ziplock of tea/sugar/whitener, couple of hexi blocks, matches, green scouring pad
Utility pouch, holds 1xmain meal, rifle cleaning kit in tupperware box, monocular (used to be a binocular ), GPS when not on wrist, Leatherman, black tape, arc markers, mine markers, 2xglowsticks, AA and AAA batteries, sandbags
Utility pouch, holds 200 rds 7.62
Single utility pouch, divider removed, holds Israeli dressing, compression bandage, rolls of gauze, extra gloves (intend on including CAT and naso-tube)
Double ammo pouch, dividers removed, holds magazines, smoke grenades, frag grenades or mini themal flask as required
Finished off with a 58 Ptn clip on the yoke straps so I can clip my helmet on easily when required. Has not been modified in 5 years and has been which me while a student and instructor on several career courses.
Microfleece, pre-powdered spare socks c/w Goretex liner, food, waterproof jacket, hydration pack in daysack, with lots of space left for ammo/radio/other bulky, heavy military kit,
Smock holds TAM's, maps, cam cream, whistle, compass, gloves, hat, glucose tabs, sweets etc etc etc.