You bring a flyswatter for mosquitoes am betting.
A pack liner simply works. Especially well on the Oregon coast which gets 100+ inches of rain per year. Revivex and silicone have their place for certain uses, unless there's an easier, simpler, and better solution. I've used both and they don't hold up when beating brush with associated abrasion, and the debris and dirt that get ground into the treatment. Nor on Cascade concrete (icy snow), which is harsh on DWR treatments under pressure.
Treating non-waterproof material, with DWR, and thinking that it'll be waterproof is just silly. Especially when you consider that seams, stiches, and zippers won't be.
So yeah, Revivex on a pack is like a flyswatter! Good one, SheriffJoe.
