Using a selfhosted version behind a subdomain of one of my TLDs. Something to be aware of - it can't be hosted behind a specific URI if you plan to have other stuff hosted on the same web root path (like example.com/wallabag), it always needs it's own (sub)domain (wallabag.example.com).
Other than that, it works pretty well with most text-based content. I'm using it through the Android app occasionally, and while the app won't win any design awards, it serves it's purpose.
I recently tried wallabag on my home server. The web version is fine. Functional even.
But the state of the iOS app is, well, not great. Clunky design, with odd syncing. Which is unfortunate as 99% of my use case is reading it on my phone whenever I’m waiting for something.
Other than that, it works pretty well with most text-based content. I'm using it through the Android app occasionally, and while the app won't win any design awards, it serves it's purpose.