Don't judge a book by its cover. I had the Fumoto with the nipple on my Passat (since the filter was under the car)...and never bothered with the safety spring clamp.Well, Fumoto looks like it came from a Home Depot plumbing section, so there is that, $20 is still quite a lot for such a simple device.
And after having one for a few years now, it OK at best IMO.
But, imagine going to change your oil and then you realized you misplaced the adapter needed to open the valve and drain the oil. That's the simplicity the Fumoto gives you.