Is there a hot key for switching between 3D Object and Sculpt modes? In the past, I've found the Tab key useful for switching between edit and object modes.  But now that I'm getting into sculpting, I'm finding that I need to frequently switch between sculpt and object modes and the tab key simply toggles the current mode with edit mode.  The best hotkey combination I've found so far is Ctrl+Tab, 4 and Ctrl+Tab, 2 which is kind of cumbersome since it involves an awkward Ctrl+Tab in the left hand followed by a separate keystroke.  

Is there an easier way to do this? I'd like to be able to do something simple like just press 2 or 4 to switch modes.
You can drag the mouse in the direction of the option of the pie menu while holding Ctrl+Tab and once you release it with the mouse moved in the direction of the option you want it will get chosen. That might be more convenient.