A friend owned one for a number of years. I've been aboard and we've sailed along side on many occasions. His was an earlier Maireholm, with a shorter coachroof and an outboard well. The outboard well was off center and problematic, so he gave up with it and went without an engine.
He had a nice set of sails, and that boat sailed VERY WELL, even in Chesapeake light air. It is a very slippery design and though only 26 feet yields a surprising turn of speed.
It was pretty tight and sparse belowdecks. Definitely more on the "minimalist" end of the spectrum. But it had a nice little galley, and a portapotti. Also, as you will see in the photos below, my friend had to add an extra tall dodger to address one of the boats vices -- it is wet wet wet.
The one you linked to at e-bay seems to have more cabin space (longer coachroof?) and an inboard diesel engine. That extra weight and dragging the prop around will probably slow it down some, but a diesel is generally nice to have.