I know my last company had training for them I never saw them at a site. We do bikes and K9 though.Not even close. I know you work security, but are they, free-standing stores? All the big malls here have been using them for years - shortly after they came out. No other way to work 1 million+ sq. footage malls. Pretty cool to watch them. Security will just stand there on them in neutral, 12-15" over the crowd. Then suddenly go sliding off virtually silent. They can outrun anybody on an open surface, easily. The LEO grade ones can hit low 20s mph., more if hacked.
When I worked for large nameless (think red). They also had training for them but I never saw them.
They think on foot is more friendly. It really just ties our hands.