I don't own one, but ridden one around Thetford and the area. A very fast race day bike which comes into it's own
when putting the foot down, however it felt clunky and certainly there are much more suitable frames for all day
comfort in the saddle. Not particularly light either. For sure you get lot's of comments about the unusual box section tubes, but the clunkyness, various oddities and longevity questions means I would not want to own one.