Looks pretty cool, but it does have some limitations.
You apparently can't coat an object that is going to be continuously submerged. The coating requires a layer of air to form the "superhydrophobic" coating...whatever the fuck that means.
The top coat has a frosted look to it when it's dry, so there are some objects you might not want to spray it on, as it would affect the appearance.
If you ever have to reapply the product (which it's not permanent, so you will), you're supposed to sand off the previous coats before reapplying. Sanding isn't very practical on canvas shoes, wooden furniture, glass, electronic devices, etc.
If they could make this product more permanent, it'd be great. But I'm reading reviews where it's rubbing off on people's hands like a chalky substance, and that it only lasts for a few weeks for some people.
But, let's be honest...you don't need weeks of usability to do this: