Lighter that is obvious. So the boat is faster, but you're no more in F18 spirit.
What is the interest to have a faster F18 on the the start line ?
You want to be in front of the F18 fleet, I suggest you to improve your sailing skill.
That is the genuine F18 spirit and the key of the success of this formula.

Equal durability and less cost that is only Andrew and Alex words.
I ask Andrew, who is a great technician, to show us tests (UV, mechanic, abrasion).
I wait to see that 1,5 mil. offer the same protection than 3 mil.

It was the same argumentation for paint. Alex and Andrew claim it was for economical purpose only, and one year later Alex admit that gelcoat is dead weight and using paint allow stiffer platform.
You can believe sales representative to defend their interests more than yours.

The same kind of question was for the diameter of wire shroud. 3 mm was ok and faster but they broke after 6/8 month use and you need to change them once a year. 4 mm is now the rule and you can keep them for many years. There less business so less mess