Not too much of a fan of BAGS and belts - sciatica has the best of me.... I'm sure there also a few of those out there....
IMO there are too many people busting themselves up carrying WAY too many tools for the tasks of the day. I have a few dopes under me with bags that seem 5' wide and wiegh 50 pounds... Sure they feel macho now but they won't when they're 40!
I'm also just barley old enough to remember that an electricians pouch is what you see in the OP, and except for the heavy tools you walked in with in your tool box that got laid on the floor where you work is all that you needed, apart from that - a nail apron with staples and wire-nuts....
As for tools for the day - most often for me it's my laptop to pound out RFI's, cans of inverted spray paint, markers, a tape measure, lasers, a pair of Knipex linemans, and a beater flat-head. Most of my day is pointing at work for other people to do......
When I do get down and dirty I have several vests and tool boxes - all task specific. Two of the vests are Skillers, and one is one I made MYSELF that I use on rare occasion still in rough wood framing - I have been a tool vest guy for a long time. My first was one issued to me in the Marines - it was a shell that fit over a flack jacket with a few slots for tools and a couple of pockets that coud also be used for grenades.....
I lost it when it was stolen, and I later made my own. It got re-worked a few times then I re-hashed one out of a hunting vest. Then I found the Skillers ones, and now have a few of those - I like them, and I like their velcro-on tool pouches.
I wouldn't mind checking out the Occidental vest either - looks a little too over built though.