I think it's neat! I wouldn't use one because I don't work on the go, and anyway I don't have that many supplies to carry around. But it looks handy and well-made, and I like the shiny black appearance.
A quick search of my local art supply store's site showed that there are similar things out there
, but not quite as sexy looking perhaps!
You might want to make the crowdfunder link a little more prominent there--I had to scan over your post a few times to spot it!