I use the parking brake on the Burgman a lot.....comes in very handy when parking on any incline. I do not want the scoot to roll down hill and fold the side stand up and drop the bike!
I apply the parking brake every time I get off the scooter.
My Kymco LIKE200i does not have a parking brake.....
So, I use one of the thick , colored, rubber bands found on a bunch of Asparagus -- around the grip and front brake lever. The bands on Broccoli work well, too.
I store this emergency/parking brake on the right turn signal pod - so it is always handy when i stop.
Also, it might deter a really dumb thief !!
and, I just like this picture!