I would say the older design motor sailors would fit your description but not a new design aimed at close to 100/100 % power and sail ability made of modern materials. These boats can be fast under sail and power and dynamite with sail up and some power especially going to wind. Marine architects have learned a thing or two over the last 50 years and if you have the $ to let one in cahoots with a good builder loose you can have it both ways.
Ok, here's what I want in a 42 to 48' boat.
From the sail boat:
1. A boat that sails like a passage maker and can point well.
2. Stabilization coming from it's mast, hull and keel(s).
From the power boat:
1. A roomy pilothouse with an unobstructed view (no mast and jib in the way).
2. Comfortable rooms (no cramped staterooms, living in the cave or catamaran hull).
3. An engine that can cruise at hull speed for days.
4. A big enough propeller, shaft, and gear to drive the boat into wind and seas without loosing speed.
5. Fuel capacity in hundreds of gallons so you can go somewhere without sailing.
6. Fresh water capacity in hundreds of gallons.
7. A galley that looks like it came from a trawler not a sailboat.
8. A generator, air conditioning, and a washer / drier.
9. 5' draft; 48' air draft.
Ted