As said the Passport, Valiant (Perry design boats), Island Packet 40 and Caliber have had the Pullman berths forever. Caliber 40 and Island Packet 40 also have the head front of the Pullman berth.
I agree with Jeff and others about the advantages and disadvantages of a Pullman berth. Getting up in the middle of the night and having to climb over the other person is a pain. However, If done seductively,,, who knows what could happen!
Maybe coping a free feel along the way! If one is on anchor watch or has a weak bladder they can sleep on the outside. There is always a solution of sorts for most disadvantage problems on boats. Maybe not the best but a solution nevertheless.
Forward head. On the Caliber 40 boats it makes the master suite like the Ritz for a small sailboat when at anchor, dock or mooring ball (90%) of the time. When at sea, it is a great place to store things, especially in the enclosed shower. There is never enough storage on a sailboat. The other great advantage is storing wet sails, like spinnaker, code zero ,A-sails or staysail and not get the V-berth wet or any other areas where water and materials are not wanted. If you accidentally leave the forward hatch open, no real big deal as the water goes into the bathroom and gets pumped out. No damage.
As far a sea berths, non issue on most boats with Pullman configurations. Most sailors use the settee's with lee-cloths or the small aft cabin for which the designers make so communications between the person on watch can easily communicate with the sleeping person when the occasion arises.
As far as the second head, Passport, Valiant and Calibers all have a head aft.
Island Packet 37/38 designs are unique in their designs of the forward berth. There is a odd shape queen size bed that can be gotten in and out of on each side. One I favor a lot over a V-berth.