[pengaru]

I doubt your claim but wanted to mention a La Honda local once gave me a ride stranded with a flat tire on Pescadero Creek Rd.

His pickup bed was full of poison oak and landscaping tools, arms and hands filthy from the work.

He warned me not to touch anything and not shake his hand etc. saying he's covered in poison oak but immune from the frequent exposure.

It's everywhere around here and I react horribly to it, but this experience lends some credence to your claims...