There isn't an engine out there that doesn't emit oil from the pvc system to some extent..
I've built plenty of engines to know that an oil catch can is a decent mod..
I built an engine and ran it for around 20k till I decided to pull the head and use some arp head studs, no other changes.. There was a small amount of carbon buildupon the pistons..
I cleaned them off, prepped the deck, and finished the install..
While I was waiting for suspension parts, I made a catch can after reading something on a solo2 site.. It didn't seem like a bad idea and it couldn't hurt anything..
Once it was buttoned up, I did a cold and hot compression test and all was consistant..
I ran the engine for about 40k this way before I did a cam swap (sohc) I messed up and dropped a valve so I pulled the head and the pistons looked great, next to no buildup with twice the mileage...
It could be the engine wasn't broken in completley, donno..
I file fitted the rings when I built it and even today with 110k on it after doing a cometic hg swap, it looks great today.
If your freugal on your setup, thats fine, diy faq's are out there and it can cost you next to nothing to do..
I know all about Bob and his studies, makes for some great reading imho..
I run a catch can, could care less on what it looks like and don't pop the hood to show anyone anything because I don't care..
I got results, yours may vary, believe the hype or go the other way with it, makes me no difference