I have not been to his web site, just saw the pic's and read some light article about the performance of the engine, as far as the Howard I've just began to do research on the engine seems like a real work horse and for what we do it looks applicable, now I haven't seen or heard of the Howard single until you mentioned it, so I'll do some research on that as well, I'm digg'n those single cylinder engines and especially the single Indians.
My Mom & Dad are on a cross country trip from So Calif to Indiana( about 2000 + miles) so I've got him on the look out for a single Indian, most of the farmers used them for pumps in arrogating fields or draining after a heavy rain fall, back east they are more previlant even these days farmers still use em, so we'll see?