Lens pouches are all but useless, get some lowepro lens cases instead. I only use them for storage, most of my gear stays in my Kata bag without a pouch or case. It's only when I want to take a lens out that I wont be using that day do I then put it in a case. I live in a very humid place but have never noticed any adverse effects even with my 50 1.8. Lenses are not as delicate as you might believe, just be sensible about it.