Hello, Database Labs founder here. DigitalOcean users are indeed a key market for us, for this reason.
Besides DigitalOcean users, if your app is in a reasonably well connected data center, in many scenarios the additional network latency incurred by traversing the network from your data center to DigitalOcean is going to be minimal compared to the speed gain you get by running your database on SSD drives rather than on spinning disks or Amazon EBS.
It runs on DigitalOcean, for one.