I do it all the time - I don't know another way if you want to touch type. It creates a symmetry - depending if the letter key with which you need to combine is on the left or the right hand, I will use the opposite hand to press the Shift or Ctrl keys. And the AltGr is an absolute must for me as I need to write accents for several western European languages and the English International with AltGr Dead keys is the best solution I found so far (and I do not understand why it is not shipped with Windows).
