I've got just enough stuff here to make do for a few months, one pair of old tech trousers, one pair of work weight cotton work trousers and my new chainsaw trousers for those times they are needed...I way prefer the tech trousers, but the pockets are coming off, there is a bit of a hole by the knee, the velcro is gone, they are faded and thin, but still more comfortable than the cotton in the heat! I don;t find them clammy or sticky at all.
Only thing is they are really a bit scruffy for some work sites...I really need to get some new ones.
In Tas when sweat is not a problem, anything will do really for the times when you don't have to wear chainsaw trousers, they have some pretty amazing styles of work trousers, reinforced knees, pockets everywhere, different weights etc, etc.