Nitrokey3 and GPG-Keys with unusual length + Multiple GPG-Keys

[saper]

@Rince

And as far as I am aware, the nk3 should be able to hold three different GPG-Keys (including subkeys)

Quick answer to this one: yes, you can, see NK3C: Unable to generate RSA:4096 SSH key - #2 by saper for an example of multiple keys of different types on one card.