As I said, I understand that this is going to be a limiting factor in some regards, but I couldn't have built what I did in any other technology (that's not to say that someone else couldn't have, just for my particular circumstances).
I'm hopeful that as Silverlight adoption increases this will become less of a problem, I'm also hopeful that colaab may act as a showcase for my Silverlight abilities and lead to further contract work, which in turn can help to fund product development.
Thanks for the feedback!