Yep, my new engine builder recommended it and not why you think. It's a matter of crank case air speed. One vent would evacuate the system but the air speed is higher and will carry more oil vapor. I didn't have any issues with the old setup but I only road raced it once. I'd rather it was over kill if anything.
I didn't do much this weekend. I need an engine. Looks very likely for this coming week. However I went off the deep end on the brushing. All AC/Heat fittings, air cleaner lid, hose seperators, and both breather catch cans. All sealed and ready to go.