I've never tried. You can't use signing software to log into primal, a shortcoming that has existed for far too long. That's a no go for me personally. Pasting your nsec to login is bad form for any Nostr app, the ability to use signing software should be the norm.
Discussion
Quite sure you can login via signer now, I'm logged in via chrome extension. But I don't like it for other reasons lol, something just doesn't sit right. But I've joined nostr like a week ago, so what do I know 😅 Just trying to understand how all this works...
Ah, I'm still waiting for the Android app to support it. Still nsec only.