The ones Yogestee posted images of have the shoe angled instead of the umbrella shaft hole. I assume it does the same job of the angled hole. Look closely at the images, and you can clearly see that the top face of the plastic bracket where the aluminum shoe is mounted is in fact angled. I do not know if the angle is sufficient but it is there. I see it clearly visible in the images he posted. On the same note, I must say that on the other ones that I posted the link to they are parallel. I am sure about this difference as I have both models and I have checked to confirm what I knew.
I just like the more traditional mount on the ones I posted as I feel it is a safer mount for the flashgun. I wish I had the time to go down now to my small workshop and measure the angle, and also to shoot and post some side by side images that will explain it better.