[exray]

Yeah, it makes a mess! Gorilla Glue will foam up and expand as it cures. Its great stuff for interior or well hidden joints but not the type of thing you want to use with veneer.

Rule of thumb with repairing loose veneer is that you want it to be removable later. Wood glue allows that. If you solidly glue down one area with a "permanent" glue then you (or the next guy) will have to deal with that when the adjacent areas need regluing later.