I took a gear oil container and cut the bottom and some of the sides off to make a funnel for weird applications like this.
The last time was out riding/camping I needed to top off my oil and did not have my speical funnel. Found that by turning the steering all the way to one side, I could get the bottle in close enough to pour the oil in cleanly. HEck I don't even think I am going to need to use a funnel for filling oil at home anymore.
I think comments like mine are ones that you should not post in someone elses ad. BUt you wanted them "good or bad".
If I was in the market for a new funnel though. The ones you are selling do look like they can be very useful in all kinds of aplications.