Opinions on windage screen

I generally don't agree that the screen is there to keep the crank from pulling oil up out of the sump. I think it's there - as a uni-directional device - to help 'strip' oil away from the crank as it spins, and to direct is down towards the sump. I can envision some secondary benefit as an anti-pull-from-sump device, but not much. It has way too many holes for that.

Those trays that Matt show look nice, BTW.

I plan to use a screen and a scraper and no tray though nothing is final yet.