I sure looked. But what I learned is that when it comes to a diesel genset it's gonna be expensive++, much bigger than we need and most probably not an inverter. Another thing is diesels like to work loaded - not just spinning at 1800 and basically freewheeling. Our sweet spot is 4500 kw and our typical max load is an easy 80% of that. Our generator time is 3 to 3.5 hours a day during generator season from mid Oct through Jan. The rest of the year is solar with the generator running rarely only because of multiday weather overcasts or maintenance runs.
So its a gas unit for us. I do have a Miller Bobcat in the shop for welding, large loads, 240vac, etc. I really screwed up not getting the diesel option there, though.