I dont mess around in the rain. It is to easy to slip and twist an ankle, knee, back etc. Last think I want to do is to fall carrying a saw. I have gotten caught in the rain humping out rounds and in those cases I finished hauling out my rounds so someone else didnt decide they were for the taking. I try to avoid the rain, I dont like drying out the saw and all my gear. Plus chaps are heavy enough without adding water to the mix.
Ultimately, I dont like working in the rain. I would find something else to do lord knows I have enough projects to keep me busy for years and years.