Direct Connection Big Block Valve Covers (Rare)?

A56 said
Biggest downside for me is that there is no way to baffle them.

Moroso PCV Grommets with Integral Baffles

Moroso Breather Grommets with Integral Baffles

I bought those for a set of SB Moroso covers but haven't actually used them yet. I'm skeptical on how long it's going to take to pour a quart of oil through that tiny slot.