Sorry I havent replied to your questions, I didnt receive notifications that this thread was still going.
The glass protector has full adhesive on the back, it ensures a good and solid installation.
The protector is edge to edge (as much as the phone permits before the curvature of the phone design begins). I believe they are in the testing stages of creating a full edge covered protector, much like the IMOS
In regards to case compatibility, you have little playing room. If you case has an aggressive lip, the 0.30mm might not be for you. Instead you might want to opt out for the 0.15MM that they offer. I believe that a user on here confirmed that it wouldnt fit with the Ringke unless you have a PERFECT installation.
The spigen case offers the most grip in my opinion. After a few days/weeks use, the back develops this sticky type feeling and holds great in the hand. I can see why the thin case is concerning for you guys though.
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This particular screen protector does not cover the curved edges. It is edge to edge in the terms of covering EVERYTHING besides the curves.
Benks hinted to me that they are indeed working on a curved version, so let's wait and see.