I am no expert and am usually (well... always) on the receiving end of Q&A's on these forums. But I'd like to direct you to Jack Sobon's assesment of the framing scheme that you question. On pg.72 of the Guild's red book, Timber Frame Joinery and Design Workbook, Jack writes about this modern framing technique. And it ain't pretty. And I could also direct you to Ted Benson's and Chappell's books and the large number of frames being built today that leave out the continuous top plate and stand tall and proud. I suppose there are pro's and con's to each style. Not trying to start a war, just trying to help out. Ron