So, your question is, will it leak like a waterproof-breathable jacket? The fact is, waterproof-breathable jackets are indeed waterproof; that is, rainwater will not seep through from the outside to the inside. But they can cause condensation buildup on the inside, and that, combined with "wetting out" of the surface fabric with the DWR (durable water-repellent) coating is overwhelmed, sure as heck makes it feel like it's leaking. Years ago, makers of outdoor wear learned that the majority of gear users will sacrifice breathability for the sake of waterproofness, so they've long skewed their products in that direction.
Same for tents. Bibler uses a PTFE laminate (chemically identical to Gore-Tex, but with fireproofing treatment) in its tents. It's a heavy laminate; the stuff will not leak. But that also means it's not really all that breathable. So single-wall tents such as the Bibler take particular care to provide good ventilation. I haven't used the Ahwahnee a ton, but in my experience it does a very good job of resisting condensation build-up, and is extremely weatherproof.
Now, if it were just affordable...
Our mission to inspire readers to get outside has never been more critical. In recent years, Outside Online has reported on groundbreaking research linking time in nature to improved mental and physical health, and we’ve kept you informed about the unprecedented threats to America’s public lands. Our rigorous coverage helps spark important debates about wellness and travel and adventure, and it provides readers an accessible gateway to new outdoor passions. Time outside is essential—and we can help you make the most of it. Making a financial contribution to Outside Online only takes a few minutes and will ensure we can continue supplying the trailblazing, informative journalism that readers like you depend on. We hope you’ll support us. Thank you.Contribute to Outside →