Technology

It is the same for Bitwarden. What I noticed is if I go to a site with passkeys, then Bitwarden prompts me with a pop-up to want to add a passkey. It's not something you manually add, apparently.

Only for a test, I do not see myself switching to passkeys any time soon, using KeePass is fine in my use case. If there would be some site for which I would need to authenticate every day I would probably create a passkey on device itself (Windows Hello or Google Password manager) since authentication speed increase is undeniable.

Only authentication method changes, there should be no difference after you sign-in, how long sign-in is kept still depends on site owner.

There are various sites to test authentication experience, here's one where you can test it with dummy account and no registration https://webauthn.io/. It is pretty cool, but you need to create a passkey for every site on all devices to fully utilize their potential.

It does seem to have innovated quite quickly. I'm still using Bitwarden as I have the paid access to biometrics etc, and it has a nice tweak also to add unique e-mails for every login, etc. But I'm interested to see where Proton Pass will be in another few months, seeing I'm already paying for their service, and maybe I can consolidate my expenses a bit. I actually got drawn into paid Proton by leaving ExpressVPN, which I needed for Netflix, and then found Proton (with one or two others) were the only one's handling Netflix's geofencing quite well. Looking at options is always good.