I finally wore out my Tech Pants, after about 6 years or so, I really liked them for the hot weather work, and I like the cargo pockets that I can still get to even when wearing a harness, I stuff slings in them, not to mention the cellphone pocket inside the right cargo pocket, keeps it secure and chip free.
In the cooler climate the regular pants are fine, and a bit cheaper too.
In Oz, Hard Yakka makes great work wear.