Dennis, are you aware that 5.11 tactical is now making their pants and their button front shirts in a quick dry nylon? I dont know if you would consider them “lightweight” in a backpacking sense of the word, but the pants are 7.4oz nylon, which is lighter than MARPAT pant material.
5.11 is also now producing their own version of under armour, and a VERY nice HRT boot.
Good luck.

