Come on what is the fixation with wool,I have used Swanndris for years and they are a excellent piece of kit,heavy, heavier still when wet as for better fire resistance,be careful.In all the years that I have sat around a fire or done burn offs in forestry or scrub clearance I have not had holes in my clothing from the odd stray ember.
Wolf they also come in Olive not just camo.
As for the zips its a midlayer not a waterproof,and its got to be more comfortable then a swanndri to wear.
Clayton