And I even go further along those lines, to believing that carrying your concealed weapon in a bag is still not under your control. A bag can too easily be snatched from you, and there goes your pistol with it.
I don't know... maybe I go too far, but I believe that if I am not doing absolutely everything I can to keep a tool that in the hands of someone who I do not approve of having possession of said tool, I am not performing my due care and due diligence as a responsible firearm owner. But if folks are comfortable with the provided services then go for it. I just would not personally use the services of these storage lockers for anything that I would not to part with.
I am assuming this attendant has a master key as well? Just saying.