Seedsigners getting sold out just about everywhere

(Referring to prebuilt versions.)
While I do not own one (yet) myself, I keep wondering: since it has only volatile memory, the seed needs to be entered every time, through QR scan. That in itself is a huge risk. I would not want such a risky QR code laying around.

Is the version with the card reader better? It would allow for encrypted storage of my seedphrase.