Now that you lowered your expectation from experianced people to simply an opinion, I'll respond.
Windage trays are not simply to prevent churning air into the
oil. The air that the crank shaft is spinning in a circle causes resistance. It takes energy to move the air. This is a waste of energy, as it does nothing useful. Dyno tests have proven as much as 30 hp being gained or lost by simple adding or removing a windage tray. I will point out that the same amount of fuel is burned either way, so it costs hp and fuel.
The larger the crankshaft the more air it can spin, so an FE would benifit more than a SB.
The more rpms you turn the more air is spun, and the more hp wasted. So for normal street driving it isn't as important.