[flavor8]

> it doesn't solve the 'drip water on the floor problem', yet the promotional video implies it will

What do you mean? From the video it seems pretty clear that it does. With a regular umbrella there's no way to carry it without dripping water; with this one, the water's on the inside, so you can carry it without dripping.

[alienasa]

Uh, doesn't the water just drip from the inside then?

[flavor8]

You can hold it "brim side up" while walking to contain the water. There's no way to do that with a regular umbrella.

Of course you still need to dry it out somehow, e.g. let it drip into a bucket; that part of the video is probably misleading.