Cyclocross - CX and SSCX races and training

It is an extra thing to cause damage when shouldering I guess and could be nasty if you grab a disc?
I am personally more worried about getting an Eggbeater in my kidneys when I shoulder!

That was the logic in the original ban and it was one of the rare UCI decisions with some logic.

And to me things that seperate mountain bikes and cross bikes is not necessarily a bad thing. Oh and then there is the aesthetic perspective, thay are, and certainly look overkill on a cross bike.