I would not think there were many around by him. We know of one in Aberdeenshire who has done well enough jumping and showing with his owner. Rascal S was sold back to Germany several years ago now when Straloch Stud ceased operation.
Hope the above link works. Rascal S was ridden by Jonathan Bowman at the Zwolle International Stallion Show in 2003 in the 1.30m class. Pictures in the above link.