I use secure notes for that, personally.
Imagine if ssh private keys could be stored inside 1Password. It would become a ssh-agent replacement.
No real reason to leave ssh private keys scattered on different user directories anymore.
Maybe we'll have to kick this one in the pants and see what we can do. No promises of course but I'll be passing this along again since I have a personal investment in that idea :)
Kyle
AgileBits
I'm the technical head for our cloud business so I've got some pretty specific ideas on how to make this more useful from a day to day operational standpoint (multi-tenant infra support has lots of interesting use cases).
Feel free to ask if you want more input.
Having some information I could make sure is in our bug reporter as a feature request would certainly be nice to have around in case we did implement this at some point in the future.
Kyle
AgileBits