When signing with a password protected gpg key, there are some issues:
* If you cancel the password dialog, you should get back to the certificate selector. Currently the certificate dialog will be closed.
* If you afterwards try to sign with another key, you will be asked to enter the password of the former key again.
* When there already is an existing signature and you try to sign with a password protected signature, then cancel the password dialog, the signature will be created anyway.
Sure, let's do it.