That is a GREAT POST!! If you don't mind I'd like to copy that and put it on my website under the wizdom section. Never heard it worded so simply before.
I shot that post over to Lee and asked him why they didn't go Epoxy over vinylester on the 43 just for curiosity, and he wrote back :
RDThe Schiada is 100% vinylester with quad-directional knitted structural skins, Carbon Capped Balsa Stringers, Cabon Capped balsa bulkheads, vacuum bagged 1" to 1.25" balsa core throughout entire boat including cockpit. She is as light, stiff, and strong as she can be short of going the pre-preg, epoxy carbon route. We opted not to go Epoxy as vinylester provided better heat distortion numbers without an overly excessive weight penalty. On the west coast, our boats routinely see 200+ degree surface temps on dark colors during our yearly 125+ degree summer heatwaves out on the desert lakes. As soon as we see temps greater than what the laminate sees in the oven, we get "post-postcuring". On a race boat, epoxy is the only way to go. We don't know a racer alive who wouldn't trade some epoxy heat distortion and fabric/core print for a lighter, faster, stronger boat. Our customer base, however, wouldn't stand for the cosmetic finish a "desert" summer or two down the road. When you look into the side of a CNC tooled pleasure boat, all you should see is yourself looking back. And when you look into that hull side 10 years down the road, all you should see is 10 more years on yourself.
With that said, would be happy to build epoxy boats for anyone who wants them as long as they understand the downstream cosmetic implications, particularly for those in more temperate climates.