Disable Symmetry Planes w/o Unsetting

[Malacodor]

There should be a button to temporarily disable symmetry planes without unsetting them. I often have to unset and re-set symmetry planes because of a few asymmetrically placed blocks. A hotkey which disables symmetry while pressed would be even better.

 

[FatCobra]

I like this idea. Their are several times where I would like to temporarily disable symmetry. Perhaps a modifier like holding "shift" would disable it.