In Qld OZVENOM partitioned and provided relevent documention to get 2 wipers approved. So we fitted 2 wipers to our Harrison as per OZVENOM's specs and it works fantastic. No worries with approval either.
And they were stress tested on the way down to Nationals and worked just as well as the 3 wipers we had on the old DRB. You don't notice any difference in coverage when driving.
Although at one stage it really started bucketing down, Cobra started aqua planing around, couldn't see a bloody thing even with wipers running flat out and footwells started filling up with water. Yes, we had soft top on. Oh the fun of driving to the nationals.
I also like the fact that there is a lot less load on the wiper motor than when running 3 wipers. And 3 wipers just looks poxy in my opinion.