Well, I suppose I can test that on my engine if I really want to know but it’s a giant PITA to change the pan on the dyno and add the crank scraper and get it sealed.
The scraper makes it so you don’t use any gaskets so that’s a PITA all its own.
I’ll think about doing the testing though.
This I do know. My oil pressure on the exact same engine with the exact same parts except adding the scraper made my idle pressure go up by 10 pounds both hot and cold.
I use an up and down scraper, plus a windage tray.