Malcolm,
David is right, you could have a lot of fun in an Eriba Touring - you could tow any model from the range with the possible exception of the Eriba Troll.
The pop-top design means less aerodymanic drag, the curved shape is also more aerodynamic than a square sided van, and with the pop-top raised you have plenty of space isnide.
However if you want a shoebox shaped van, you could also look at the KIP Vision, or the new Eriba Feeling - both are straight sided vans with a pop-top.
Robert