Have a Martinique sailing coming up later this year, and probably at least 2 more next year.
The demographics aboard are very different than the US based sailings. Much closer to what they were in US sailings more than 10 years ago or so, although even heavier on French and Caribbean.
They're hugely popular with Caribbean nationals as we don't need US or Schengen visas (French Overseas Territory and all), and many can fly directly from their island for pretty cheap, or take the ferry, even less expensive....
You'll get a much more diverse demographic, for sure... Port intensive though! Doesn't bother us at all, given where we live - but for those who want to experience every port, can be tiring....
Definitely give it a try for some variety...