The security is dubious, and Durov is not exactly an exile: he travels to Russia regularly, and Telegram have had (and might still have) development offices there, suggesting some kind of accommodation with the authorities there.

I bought one. Unfortunately, it still doesn’t work well with large music libraries. The database building step takes several hours, with no progress indicator, and once it’s done, the scroll wheel does not accelerate, meaning that scrolling through a long list of artists/albums will take a long time. Hopefully these will be remedied in a future firmware.