Vic,
Challenge accepted. I just spoke to the SNE Fleet measurer and he agreed that for the SNE J/30 OD events on our 2011 schedule you will be allowed to use your 155 Genoa. There will be no rating adjustment and you will be scored boat on boat. Note that anyone can use a furler and still be OD compliant, so that isn't an issue.
Now to make this meaningful - It may be useful to collect some data. Lets check things like pointing, boat speed, etc. in comparison with the OD boats you are racing. Maybe save your GPS tracks and analyze data afterwards. You also have your flip cam that may be useful.
Time to sign up for all the SNE J/30 OD events!