So far, Reliant Yachts has specialized in making classic Down East-style cruisers like the Reliant 40, a traditional boat with a long sheer, low profile and gorgeous tumblehome. But the company, launched by two of the most respected names in the business, David MacFarlane, the former president and CEO of Alden, Cal, Ranger and Rampage, and Jim Ewing, the former VP of Alden and president of Trumpy, is nothing if not creative. Indeed, take a look at their newest project, the X40L, a Swiss Army-knife approach to yachting that’s part tender and part SUV on the water. “When yacht builders…