I have used it on my attack pants. Also have used it on my ski gear for 17 years. The tech wash gets stuff clean. Then use the TX-Direct Water in the spray bottle for DWR Treated soft shell stuff. Spray it on while the garment is still damp from washing it.
I use the wash it in TX-Direct for my ski gear, but I prefer the spray bottle and a topical application for my soft shell hunting fabrics. Let it dry and hang in the garage for a couple days. The water proofer makes garments smell at first, but the other goes away after hang drying for a few days.
I have used Nick Wax products on hard shell fabrics, soft shell fabrics, gloves, smooth leather, and nubuck boots. Their products work and are worth the investment.