3D Mouse (NDOF) - allow viewport navigation during command execution rather than 'freezing' input

When a command is being executed, such as move, extrude, scale, etc. my 3D mouse's navigation is frozen. Please allow viewport navigation during command execution with a 3D mouse (3dconnexion device). Oftentimes, I have already entered a command, but haven't changed my view or thought I had no need to. This requires me to cancel my command, change view and access the command again.