We have used this system for a couple of seasons now.  Our last tournament was a girls 18 man contest, held just a couple of weeks ago.  For two of our weight classes I opted to run as a round robin bracket to give the girls as much mat experience as possible.  The system ran very well, even with this mixed bracketing system and scored these contestants.
We did have a minor issue, and I contacted technical support at the conclusion of the tournament, and received a prompt and through response (my mistake at setup) to my concern.
Later in January we will again run our boy’s annual invitational 18 man tournament.  We could not recommend a better system.  Well worth the money!