Yes, unfortunately, Kuryakyn seems to be the only company that has a built-in armrest. I just personally prefer the Khrome Werks style as it bolts to the handrails and from all accounts is very comfortable.
I'm just seeing what options are out there in the way of beverage holders that would bolt on to either that armrest, or some other point in the vicinity of the passenger.
Thanks for those photos and links, Bagmaster. That's exactly what I'm looking for. Now I can order the Khrome Werks armrests with piece of mind. I had seen those pouches and thought she might like one of those as well. We'll see.