that you want another house on the water
or a boat that can sail?
Seriously though no salon in SIG but that huge bridge deck
to entertain a HUGE party while in the West Indies or Polynesia ... you would reign in the anchorage.
I like SIG layout actually, I think it could be pretty much better than sailing two monohulls at once.
There are some nice TS vids on tube too. Making 17kts plus without any effort. The small one is pretty new.
Some cruising cats can go 15kts + too (e.g. some Catanas will) but it takes plenty of wind to drive one that fast. These lighter French toys go faster, sooner. That's the whole magic.
I think they match the wind speed in light winds, eh?