The Hobby Vantana has what is said to be innovated fridge design as seen in this video on Youtube - https://www.youtube.com/watch?v=NzT-JAWKuq4
For me as a solo traveler I think it would be a good idea ... especially as I don't carry much stuff ... but the design of the Duetto means I have to almost stand on my head to put things in the fridge or under sink cupboards.
Not sure it would suit a family if put in a bigger motorhome