Hi MattyRob,
Thanks! I have placed my comment (in favor of publishing the unsupported method).
I fully appreciate the fact that you are using your own time to support/update this great plugin after skippy dropped it and I am sure I am not the only one who is eternally grateful for that.
However, what I don’t understand is why don’t you just post the way to include Subscribe2 into sidebar without the widget and just be done with it?
As far as the Subscribe2 plugin, putting it in the sidebar for non-widgetized themes seems to be the most frequently asked question and there are plenty of reason why somebody might not want to use widgets.
Of course, nobody expects you to support things you don’t want to support, but you can save yourself lots of frustration by answering this question once and for all.