With head clogging I rarely do, and which can be safely attributed to the fact that I print realtiv rare. Certainly not more often than before: only twice in 4 years, I had the cleaning manually fire up what each prompt successfully ran.
The ink level indicator functions satisfactorily, even if this is the same as earlier warned long before the actual end of a cartridge, the ink would all soon. Power however nothing: Just continue printing until there is, and then switch.
I think that the ARMOR solution in conjunction with a Canon printer that is precisely what the normal customer needs: The printer is practically always ready for use, even if it is far from hand. And that was with all other printers and systems previously always a problem: the Everlasting box was dried and had lengthy again come to life before could only make a printout ...
So: In my view, a strong buy recommendation ;-))
