Interesting. I think I am proceeding with Obsidian and DT in parallel. DT to a large degree as an email/document/clipping organizer, and Obsidian for self-created content. I do use day notes in DT because of the nice macro. I keep my Obsidian vault indexed in DT, so presumably (though I haven’t made much use of this yet) I can crosslink a DT item in Obsidian and vice versa.
I am also migrating over to a Johnny Decimal structure - so I am folder centric as well on both platforms.
I tried only using Obsidian for a while (first migrating a lot of old Evernote content to it), but really don’t like how it handles attachments - which is one of the limitations of strict markdown, I suppose.