This is EXACTLY the thing that I need for one of my droplets! I love how there is nothing "special" about it - it's just a disk that you can attach to a droplet. I'm sure that under the hood there's some kind of magic going on, but it looks like it's nicely abstracted away. This is what I hoped block storage would turn out to be - here's a block device, use it like one.

As soon as this rolls out to the region I've got that droplet in, I'm going to pull the trigger on it. I might even spend the effort to migrate my droplet to a supported region just to get this.