Hi Hazmail.
I've been using polyurethane glue for lure halves for about 8 years. In that time, I've probably made 4-5 thousand blanks and never had a glue failure. (at least none have ever been reported back to me.)
I've tried Excel, Gorilla and Elmer's Ultimate, and they seem to work equally well, although I believe the Excel dried a bit harder. I'm using Elmer's now, because it's a bit cheaper and easier for me to get.
The stuff is easy to use, simply dampen the wood halves, clamp for a few hours and you are good to go. I would suggest wearing gloves though, the stuff stains the skin. (if you don't mind the "what the happened to your hands?" comments, you can forgo the gloves)
Hope this helps
Count Draculure