No issues for me. I used a Tekton iPhone repair tool set that included tools for prying and slowly working through the glue, My 2012 model A1339 was glued in three places, with gum about 2cm in from each of the corners adjacent to the battery compartment, and a very strong foam tape in the dead center atop the main IC. You're really trusting the solder on the IC to hold, so it's not without risk. The Tekton pry tool has a wedge section to apply steady pressure, and that's what I used. One turn of the screw and back in business.
As a side note, it would make me feel a lot better about how much Apple charges if things weren't pasted together like macaroni art.