Sirius Glass
Subscriber
This highlights the issue you are experiencing, and helps explain why it is a problem. I don't know that most people understood why it was a problem - most have either a rotating carrier or an inclined column..
The vertical column prohibits you from turning the easel.
The negative holders prohibit you from turning the negatives if they are in a strip.
The only way to turn the negative in your negative carrier is to cut up the strips into single negatives, which I will agree is not ideal.
The only way to avoid the problem for vertical compositions in camera is to turn your Rollieflex or Hasselblad sideways at time of exposure.
Even Sirius would probably agree that that makes the Hasselblad awkward to use.
I have no problem looking a negative sideways. After all when I look at a ground glass for LF the image is upside down. A lot of fuss and bother about nothing.