Funny. I bought a "1DV" labled strap for my Camera some years ago. When I was shooting at the soccer WCS some persons looked very interrested at ma Cam ;-)
Just take a Mamiya 7 II .....
By the way: When I was on the F1 race in Monaco some weeks ago, I saw an photographer with the 200-400 4.0, using an unknown camera, as old fashioned as these pictures, without an extra eye-finder. A quadratic camera with no esthetic forms. Like self-built. But it was definitively not self built.
I wonder, if another company uses the Canon mount? But wich one?