I know that the LP5/LP50 and similar indexing pistols can be used in precision 10m by using a single shot magazine, but I believe the trigger isn't quite as good because of the additional parts in the mechanism. If the DU10 trigger is anything like my GP45, it is a long way from being like the trigger for a dedicated single shot match pistol.
How weapons control at a match would view it - I just don't know. My first experience was with a Gamo Compact, and the guy doing the checks was completely confused by it - they only ever see PCP's.