Why not regular luggage though?
Why not regular "passenger" luggage like the Samsonite (Centric Hardside Expandable Luggage with Spinner Wheels, Black, 20") that you already have in your closet for personal trips but also meets company standards? (AA WO)
Why pay for a separate bag if it doesn't stroll vertically on 4 wheels like all your passengers' luggage does? What if you don't need the J hook?