You can do that, but don't call it 'non-commercial' any more. What else could be a commercial product?
all our code is available on SVN at any time. For more convenience we even changed the SVN structure so that you can simply export the trunk and pack your own version.
The only difference for the club members is that we are doing this and allow them a download. The Club is not related to the product it is related to support and additional extensions.