Slow in light airs, not fantastic upwind. Cockpit cluttered. Rig makes it easier to handle in winds below 25 kts, higher windspeeds still require normal careful sailing attention.
From a cruising aspect design is fine for colder climes.
Peter, If the boat if the boat you are looking at has a lifting keel/centre board - check the mechanics of the lifting gear - in fact do a test. Sometimes there are problems with fouling and barnacles in the inside of the board casing because antifouling not applied thoroughly.
Check the sails for wear and aging - and what area, so that you can determine the SA/D ratio to establish likely performance.
Finally , I think we have discussed this before, if you like what you see and intend to go forward, get your own surveyor who knows free standing rigs. Remember that he will not do a
engine survey - other than tell you that it is clean or dirty or rusting. You need to run the engine under load - compression test etc.
Take your time and good hunting!