Working really great for me. I originally just bought it to run Pihole on a dedicated machine and have a secondary pihole instance on my Unraid server in case either of them went down but leaving it sitting there with just PiVPN and Pihole duties seemed wasteful.
I'm getting even more out of it running some of the lighter containers on it with plenty of spare room to do more.
I've logged/uploaded my upgrade process here just so you can get some ideas on what I did. https://imgur.com/a/ExcLdtt
It is bulkier than a raspberry pi, being around the size of a router but the low cost and being able to utilise hardware that I had sitting doing nothing made me go this route rather than just getting a pi.