Miracles happen! I installed the Supershieldz this morning. Here are some details. Maybe it will help someone else?
-I used the hinge method with the scotch magic tape on the side opposite the side tab.
-Due to my clumsiness the tape on one side fell off while putting it on - so had to wing it with one side as anchor.
-After installation, indoors, it looked awesome! With dark background. I went to settings - white background (this is a must) and saw a piece of dust. Removed and reinstalled. We both looked at it - perfect!
-I went outside (overcast day) and at the top right - the area not used for anything - there was a piece of lint not trivial in size. Also, the protector wasn't centered. Never underestimate the illumination properties of the sun!
-Got into work. That lint in the upper right was bugging me. I only have the one protector - should I take the risk? Of course I did. I ended up removing entirely. New dust particles and air-born objects got under protector. But I got the thing in the upper right off. Back to the magic tape (better to use supplied stickers, but tape was ok) and got the new stuff off. I also introduced a fingerprint - must have touched the protector (no latex gloves).
-The end result - surprisingly it is excellent! No bubbles in the top corners or anywhere. No lint under the protector, and the fingerprint went away. And I double checked in the sunlight.
I get why these glass protectors are so amazing. As good as going without + added drop protection (they say...). So just a little planning and do it!