Point noted Peter, but one thing still makes me uncomfortable. There are ppl out there regardless of style, that performs shihonage without their center facing uke, thus they will pull uke's hand downwards and away from uke's body. Of course this seems to be a particularly devasting way to employ shihonage and will almost certainly result in uke doing a flip breakfall. And if uke is somewhat unfortunate, a dislocated shoulder as well.
However, I learned to perform shihonage with my center facing uke, and to actually pull uke's fingers downwards closer to his body. This method will seldom harm uke's shoulder and its effectiveness cannot be doubted either. The latter method is also advocated by aikikai shihans in their seminars. Does that mean, the spectacular type of shihonage is wrong?