I thought these Harryproa outriggers were quite interesting. They're made out of glass on plywood and look like something Dom might eventually make.
The wheel pivots, and can be used both inside and outside.
The sheet winch doubles as an anchor capstan - there is no need for a separate windlass.
The twin unstayed masts can be easily handled by one person by hand in the rough. Unthinkable on a traditional cat this size!
An earlier single-masted design (looks like 5-10 have been built).
The tender is an integral part of the design, and slots into the hull.