The 36C is a Bruce King designed cruiser with a traditional styled topside and a modern (for the mid 70's) underbody (fin keel). I've seen posts here on the site that they sail very well, which I would expect from any King design. I've also seen websites for E36Cs that have cruised all over the world. Not a motorsailor.
Several owners on this site may weigh in on other aspects of the design.