Amac, wondered about that myself.
So far just using the slow blink for 5:30am ride to work w/few cars around.
Steady red for the daylight ride home.
If it's raining , night or day, will probably use the blinking red.
(I know of one fellow in LA, Calif. who has ridden his little Honda Metropolitan 50cc scoot for a couple of years with a red blinker on the back and a white LED on the front - he rides in all weather, all parts of town and even creeps up into the mountains. Even camping on that goofy little thing. He swears by it! He's the fellow who gave me the idea for these light additions to a scooter in traffic.)
Hard to know what to do on a scoot to stay safer.
Had a pair of guys in an old pick-up do a left turn from the right lane, across my bow, today. No signal and I know he saw me in my screaming yellow day-glo jacket, he turned the previous corner with me next to his window. I'm thinking that whatever I can do to make an impression on surrounding drivers might be a help, but who knows, eh?