If you make oil samples; makes doing this in mid-stream easy to get oil in those tiny sample bottles!!!
I've seen that valve for years in the Geno's catalog too and always thought it was a dumb idea. Why take the risk of having a valve on your oil pan that could get snapped off or opened up while driving when the factory drain plug is so simple and secure?... You all have opened my eyes a little though as to how convenient it could be. If you had some empty jugs around it would be nice to be able to control the flow and just fill them up right from the oil pan. Sounds like a lot of you have used the valve for years without incident. So I guess it's not so dumb after all...I'm not sold yet though. I'll keep my drain plug and trusty 5gal bucket for now.
I do have and engine with that other kind with the hose you screw on. It's on my Bobcat 442 excavator. It came with it from the factory. It's a 75 hp turbo oil cooled Deutz. Maybe it's a Deutz thing, but you have to have something like that in this application because of the bell pan. The hose gets the oil out without making too big of a mess. It works good, but it drains a little slow.
Rick