Thanks all for your suggestions. Today I went to REI (a US outdoors product store) and looked at the climber chalk bags. They looked quite good for carrying several lenses on one's belt. i was looking for some thin protection for lenses inside other bags. The chalk bags seemed too large for that, taking up even more space than the lens wraps.
But I did find microfiber cleaning cloth and storage bag, for $4.95 each. These are meant for eyewear. Mine is from Suncloud (
www.suncloud.com) but is not listed on their website. Internet searches bring up others however.
Here's why I'm belaboring the point. These are quite large enough to take two lenses, possibly three. I'm planning on supergluing two rear caps together so i can use the bags for two lenses w/o banging them together.
Added bonus: the bag is just large enough to act as a slip case for my M6 (thus, presumably for other M's, but not the M5). Not large enough for an RD1s.
This should allow a two camera, four lens setup to go one around the neck at the ready and the rest in a modest size fanny pack.
Now to look for really small bags that can protect a viewfinder or two. Might have to resort to getting some cloth of my one and finding a seamstress or learning myself.
Thanks again.