The iron-on method with regular carpenter's glue is nothing new - personally I'm using Titebond III - great viscosity for application lint-less velour rollers.
Frankly, I wouldn't worry so much about scorching, since there will usually be alignment/sequencing pencil marks to be sanded out, and a little light scorching can actually be used to advantage in outlining rebated driver cutouts/ port slots, etc.
Some of the thicker / two ply wood backed veneers might need higher temperature than medium setting to fully fuse the layers of dried glue.
And of course, you can't spend too much time going over the entire surface, and particularly the edges - it's a lot easier to prevent air bubbles or wrinkles than to try and repair them later.