I've retrofitted a bunch of the new sure-spill type gas cans with the spout and vent in the OP. Very satisfied customer. There's one with a long, two-piece, large-diameter spout that works great for getting diesel into the deck fills without spilling a drop.
Did you also notice they quietly did away with 6-gallon portable cans? In most states you can only buy 5-gal cans now. I can't help but wonder what they think we're going to do with that extra gallon.