Z-tree hit the nail on the head. Its all up to the judge!
The judge has to recognize the many minuses in the rule book and put a scratch on the paper. I see judges only scoring "checks", "strikes" and "non-produces". Very few "jumps" anymore. Plus we have a 5 min. "no hunt" rule. We shouldn't have to walk dogs into the briars.
A small number of hounds can run both formats. The rules are in place so that each type has their own. (even LP has minuses)