Those that like a diesel will always justify it just as I prefer petrol. As for proper trucks, ships and busses, these are running BIG diesels that do produce serious HP. The LR diesels are not even close in this class of engines. There is the safety factor of diesel over petrol but it isn't enough to justify going to the dark side.
If they are so great Mark get them up and running
Bring the Nigerian Princess to Moab in Sept- or better yet Portsmouth Island in June