Hummm, while I am a cast-in-stone rotary type, I really don't see any point in throwing stones at those alternate engine types who prefer pistons.  Many smaller airframes simply couldn't use a rotary even if they wanted to.

 

My  view is that us "Alternative Engine" types all face the same "hostile" outside world and need to stick together.  Certainly we can (and will) debate the relative merits of each choice, but I certainly feel that somebody that successfully puts a covair,Subaru, V-6, etc,  in an project and safely gets airborne is a kindred soul.

 

Now, if the logo has something like an "X"   across a symbol for a certified, expensive and all to prone to cost $$, aircraft engine, - that - I might could sign on for {:>).  But, since I won't be going to Oshkosh, I guess I don't have to be concerned about it. 

 

Just my viewpoint on the topic FWIW

 

Ed