any feedback on using this service?
The bad: their ARM boxes don't get IPv6. At all. The VPS's get 16 IPv6 addresses, which is really dumb.
The badder: their ARM boxes and their VPS boxes can't be shut down. You can reboot them, or you can save their local state into block storage, which even for a small box takes many hours (up to a day in one instance for me). You also can't force-detach a volume from a box, so if say your box/VPS got borked, but you had a data volume you want to save, you are SOL.