My guess is that most guys (myself included) would find it too difficult to build. Then there is the fact that it doesn't easily fit into the existing racing classes. The only available racing class that I know of other than a "run what ya brung" type of race where it would "fit in" would be giant scale unlimited. It's not an F1 so you can't race it there, it's not a warbird so you can't enter it in that type of race, in Q-40, twins are not allowed. So the only realistic venue for it is giant scale racing which is cost prohibitive to most people and has but a few contests around the country each year. I could be wrong, and I often am, but I believe that the guys who are going the fastest in Giant Scale are using single engined designs.

The short answer is, it's probably not worth the effort.