Hi Cameron,
I'm not entirely sure what you mean by a permies solution to venting. I think venting in and of itself would align with permaculture values, depending on the materials used.
One thing you might consider researching is the difference between a "hot roof" and a "cold roof" as pertaining to insulation and design. Those terms will bring up lots of good information. Personally I think ventilation is a really good thing for getting rid of moisture problems, so I tend toward the cold roof idea.
One design I saw used soffit vents and roof vents, but allowed the use of the attic space. They achieved this by not filling the insulation cavities completely. If the roof was using 2x6, then they would use insulation meant for 2x4. If the roof was 2x8, then they would use insulation for 2x6. Keeping the insulation towards the inside leaves a 2" (approx) gap between the insulation and the roof. This allows air to move into the soffits and exit the roof vent and keeping things cooler and dryer. Depending on the insluation used, some people would build or buy a spacer between the supports so the insulation would not get into this air gap. This method gives you ventilation, insulation, and a usable attic space. On the other hand it is somewhat a hybrid between a "hot roof" and a "cold roof", and hybrids don't always work as well as one or the other.
Just my two cents.