I agree, get the Porsche you want. Why would you let annoyance at Porsche marketing prevent you from buying the car you truly desire? That makes no sense to me.

I wouldn't worry at all about running R-compounds on Boxsters or Caymans. People run them here all day long and I haven't heard of anyone suffering from oil starvation problems. I routinely ran my 01 S with R compounds VERY hard at the track, and my engine was rock solid after 50k+ miles.

Slicks might be another story, though.