[Tim Wood]

There are advantages to either approach; using services, OmniFocus gets full rich text support with attachments, for example. Any self-respecting modern Mac OS X application should be supporting services. That an app from Apple doesn't in this edge case is certainly annoying.

I'm personally using cmd-shift-, (which on my US keyboard has the "into"-suggesting "<" character).

Edit: I should also note that we've logged this bug with Apple and will continue pestering them about it. If time permits we may also write a fix via a Mail bundle.