It's a great chance to learn the ins and outs of the proper use of "Canned NO!": When to use it, when not to use it, and what it can and can't do. There'll even be the opportunity to practice with inert training spray, like Melody Lauer is doing in the photo below.
(These days I'm a big fan of POM. It's good spray, in a compact form factor with a flip-up safety lid that's safer to carry in a pocket, and when you get the right colors, it doesn't even look like pepper spray on casual inspection.)