Option to toggle visibility for Guides outside of drawing tools

Feature Suggestion: Option to toggle visibility for Guides outside the use of drawing tools.
I think the Guides feature is a great help when planning perspective-altered walk cycles and other distance-crossing motions, but the guide squares vanish when activating the select tool.
I think it would be nice to have the option to toggle visibility on when using tools other than the drawing ones. If I wanted to nudge a drawing with the select tool or alter the drawing with the envelope tool, while keeping it in line with the guide, it would certainly help if the guide remained present for reference.