I was looking at the various porn photos of the Friendship 40. They obviously got rid of the traveller to remove the deck clutter. The depowering of the main without a traveller can not be as precise but there is some upsides too. Considering this is a 800k boat comes with this hydraulic system - it has to be smooth and the hard vang strong. The designers are touting this as effective. Considering the direction and obvious ease in string control - i though i would consider this adaptation in future projects.
If someone has a link to how this is done or done a similar design layout that would be super.