I'm afraid we haven't setup a shortcut for filling a form with
the information from identities but that seems like a really good
idea, our development team will definitely consider it for future
If that's a really critical feature for you 1Password may not be
the right choice for you but I hope we can win you over with all of
our other features. :)
Please let us know if there's anything else we can assist you
with while your giving it a try or after!