I have the 34 Pilot with twin Yanmar 240's. I don't do my own engine service. But the engine surveyor who went over the engines pre-purchase said there was in fact room to service the outside of both engines. His exact words were "tight, but doable." He was about 5 ft 9 inches, 230 lbs.
Also, I have observed no handling problems with my boat, and am very pleased with her. Although I have never been on an Eastbay 38, it seems to me that that boat is in an entirely different class (higher) than the Mainship. And at a different price point, too, I bet!
dmarchand's comment about being fine for 3-4 days but not a week is worth considering. We have done a week in my Pilot and it was fine for us (a couple), but it might not be good for others.
Overall, ours is a very seaworthy boat, and we have had minimal trouble with the enignes/drivetrain. Love those Yanmars. If you want to try her out, she is available for charter through Southwest Florida Yachts.