Hello @James May - I'm from NZ and we currently have access to this show.
Now, we might be a week or two behind with the show itself, however, I am curious ... why are you focusing on chaps drying their hands?
Most will know that a lot of blokes will pop to the loo and not wash their hands. In fact, they should because they will have contact with certain parts of their anatomy.
Women on the other hand, more likely or not, will usually wash their hands after visiting the loo (I remember with little babies always washing my hands regardless of what I was doing).
So, my curiosity is, why the focus on blokes? Crikey, there's nothing worse in a bathroom (work, airports, etc.) where someone is waiting to use the hand dryer but one feels that they can't complete the entire drying cycle due to the next person waiting. And don't generally wipe their hands on their clothes (well I don't!).
As women don't actually have contact with their anatomy when performing their ablutions would be keen on your research.
Cheers
Gilly Blandford.
