Burnt Ash said:I find Goretex to be almost completely useless in many circumstances in the British Isles for two reasons:
THISTLES
&
GORSE
Once a Goretex membrane is punctured by the very fine and very penetrating spines of thistles/gorse, it leaks. That's it! End of story!
. . .
IMO, really impervious ponchos (PVC sheet) are the most effective waterproofs. The poncho has vastly better ventilation than any closed jacket design, which more than compensates for any lack of breathability in the fabric. On the debit side, ponchos aren't suited to several activities: they'd be useless for sailing; serious climbing or any activity that required much use of hands/arms above shoulder level. They can be positively dangerous in very high winds. Burnt Ash
There are reportedly thorns in other parts of the world.
I also use a poncho when the activity allows, but (except for inexpensive all-plastic models) the poncho, like Gore-Tex, relies on a coating over some material. If the outer layer is tough, it resists punctures. If not . . .
The "hanging" Gore-Tex liner noted above by yowee resists thorns pretty well. But it still hardly "breathes" in the rain, is expensive, and, unlike the poncho, can't be rigged as shelter.