OK this is just a cheerleader comment, let's keep this search for a great vest up! I just patched up my old vest from the 80's with duct tape for the 4th or 5th time and it is now getting to where duct tape will become the primary fabric in the thing!
I love Mike's lighted vest idea. (Does it have pockets Mike?) I just saw a vest advertised for runners that had some led lights but maybe some room for a logo. I doubt if it had pockets. I think we need a clothing designer, tailor, or seamstress so we can adapt something that's almost right.
And I just read a comment by a biker who stated that whenever he pulls a trailer behind his bike nobody gives him grief. (Maybe he means one that looks like it has little kids, I'm not sure!).
So a lighted vest with convenient pockets, not too heavy, comes in various sizes, possibly to be used by measurer pulling a trailer-- is that a lot to ask?