Rhino for Windows
Surviving without it, but how about a button or status-bar switch to globally toggle tooltips transparently while in another command..
@pascal might know if this could be scripted. It doesn't appear that a Macro can be made to access this control in the middle of a command. Options>Rhino Options>Modeling Aids>Cursor ToolTips
The toggler macro is
! NoEcho -Options ModelingAids CursorTooltips Enable Toggle _EnterEnd
but _-Options it cannot be run within another command. No way to use VBScript here that I know of.