Self-signing kernel extensions for loading under Yosemite?

Has anyone tried to use codesign to self-sign a previously-unsigned kext for personal use under Yosemite (10.10)? Self-signing is discussed in this apple technote, but not for kernel extensions specifically.

In my case, I have an unsigned kext that I'm willing to trust, but I also like the idea of the safety net only loading signed kexts provides in the general case. I'd rather specifically allow this one that I trust rather than just turn off verification wholesale with the dev mode boot option.