Pertex is basically windproof only.
Thats true, but pertex and its clones can be made reasonably waterproof with some wash in DWR and with the right layering can be pretty versatile.
I have a Montane storm rider that, in contrast to BWD, I find a perfect fit, including the long arms and very dropped tail. I also have a Berghaus ‘airfoil’ pertex clone. The Stormrider is built really well but is pretty minimalist. It doesn’t have many pockets or a hood. Works like you’d expect EVent to.
I use the Berghaus for 95% of the year since with a decent dose of wash in DWR its good for everything except the heaviest rain. It also breathes FAR better than even eVent, and if I do get wet, it dries (and helps me to dry) in a pretty short period of time.
For proper wet days though, the Stormrider goes on. I know its event, but it still feels like wearing a plastic bag in comparison to the Berghaus, and still builds up condensation anyway.