Location's Distance/Proximity exposed filter without Node Location Submodule but with Location CCK Submodule instead
I was faced with the same problem and "solved" with a little workaround:

I use both node and cck location. The one is hidden from the user, he only sees one, and if it is changed then I copy it into the other one.

That way I have both a cck field for flexibility's sake AND the node location for the views. :)