Personally I just find diesel aircraft a bit strange. I once saw some diesel Piper Archers doing circuits at Elstree, they looked like Archers, but sounded like Vauxhall Nova's and that put me off. Fair enough if it was designed to run on diesel in the first place, and I know JetA1 is similar to diesel, but unless it is a jet, I just think good old AvGas, or MoGas is better.