David wrote, "There sure is a lot dogma associated with backpacking. Try something first before dismissing it outright. Some waterproof
breathables work better with insulation over them."
Hi David, i wasn't stating an absolute, or that i was very sure of it, which is why i wrote "i would think…" not a very firm or strong preface. I'm a fairly open minded guy, and will try and consider much before dismissing it outright.
However, i lean to dismissing it (at least for the conditions i usually face) because of all the posts and threads i have read here about CFM levels, windshirts, etc, etc. My limited understanding is that to understand the CFM levels of a given system, if you have two layers on, you basically get it decreased by a factor of the combination. So it's more of an informed guess based on logic and prior knowledge. (Richard Nisley's posts were very informative in this area).
What i really like about the Frogg Toggs is just how breathable they are as a 1st and only layer. I just don't want to mess too much with that, which is why i like Justin B.'s idea a bit more right off hand. I'm of northern Celtic (lots of Scottish) and Germanic blood primarily, and i tend to run hot (though i don't sweat profusely).
David wrote, "Most rain pants blowout at the crotch, in my experience. Wearing some light suspenders will prevent most of this."
Thank you for the tip David.