Hi,
I just created command that Show/Hide Dimensions. It toggles visibility of dimensions.
If all dimensions are hidden they will be shown else they will be hidden.
Command - Styles_ShowHideDimensions

Download it here:
http://bit.ly/1SCvfJP

Also in archive there is modified original dimension script.
It will unhide all Dimensions if they was hidden when you run command.

Max if you want you can keep this modification in future releases there is function at the end of _Dimensions.htm called ShowDimensions().