Picked one up a few weeks ago, I read blog posts on my commute now that an automation downloads at 5:30am every morning and uploads them to my OPDS server. The form factor really shapes how I use it. I put it in the pocket where I used to keep my thin wallet (wallet now stays in my bag if anyone here wants to rob me)
Thin wallet gang.
I carry four cards in a 3D printed sleeve which is two walls (0.8mm) thick.
When my state implements digital drivers licence I can take that down to three cards.
I just realised an elastic "card sock" would be even easier.