Hey there Oshawan

Yes I had the 3M chipgaurd done on my bumper only. I'm quite happy with it. There is only 2 relief cuts that are visible at all. Otherwise all cuts/edges land on the seam in the body panels or on a break line so you can't see them. Very minor imperfections - no noticable stretch marks. I don't have pictures but they would be useless anyway b/c you can't tell it's there unless you see an edge, or you touch it. It's otherwise 98% invisible.
PS - Look at the photos from the Brampton GM test drive gathering. Mine is the IOM on the far left.

Greetings from Oshawa, do you happen to have any pics of your 3m job?
I believe you had just the front bumper done, that's what I want to do.
Just wondering if you like it.
thx