If you look at the evolution of style and design of catamarans right from the Wharrams through the Crowther's to what we have now you'll notice a dramatic change in cabin
and sheer shapes.
It came from the use of 'French Curves' a plastic drawing template used at the time by draughtsmen. Gone were the boxy albeit functional cabins to a more streamlined curvy style.
Schionning are a good example you could lay a french curve over the profile and achieve a perfect match. BUT whilst you effected a low wind/sea resistance profile it bought in curves to windows which were initially made of Perspex then Lexan
, these materials have a high coefficient of expansion and soon broke free from their bondings resulting in leaks
FP in some of their designs carry this use of French Curves into the interior
resulting in triangular benches and ironing board shapes on the cabin head
My taste doesn't go for this at all for a Cruising boat i prefer a 'boat like' timber varnished fit out. Initially i didn't like the Lagoon 440
profile i thought it was a bit 'tank like' BUT now having experienced the sheer room inside with windows sheltered by a brim above and hatches forward on the cabin front that let volumes of airflow in i love it.
One FP style i really prefer over all others both new and old is a Fountaine-Pajot Eleuthera 60,profile wise, to me it's a blend of all things right. It's a powerful functional looking design, i haven't looked at the interior
or it's layout, i guess because i cannot afford one anyway BUT it ticks the boxes for profile...
Only my thoughts.