Hi, Troy...
You are correct about Rutherfords usually wearing the Hume/Home; I was told they'd never wear their district, though!
HOWEVER...my friend actually had a Rutherford created and woven, and it has been registered with the Scottish Tartan Authority (though as of last night, I couldn't find it with a Google search).
If you PM me your contact information, I'll get you in touch with my friend Keith and he can tell you how to acquire the Rutherford...it is a very attractive tartan!