For the record, métissé does NOT mean mongrel, at least not in a pejorative way. Métissé means of mixed breed which is what the bikes made by the Rickman brothers were, their running gear and the engine by someone else. I may be wrong, but the only times I ever heard mongrel in english was to describe dogs, in french, métissé is used to describe offsprings of mixed races, especially black and white but it is not derogatory.
Oh, the Métissé looks nice, too much for my means though.
Jean