A xebec was a product of its environment -- Med winds are flaky, and there's (relatively) not a lot of maneuvering room; so in order to take best advantage of what wind there is, one needs fore-and-aft rigging, even on "big" ships. However, outside the Med, the xebec isn't nearly as brilliant -- it's just another sloop- or schooner-sized unit. So I don't see the xebec as being a huge seller, unless there's a huge untapped market for "Barbary Wars" small-unit actions.