Vic,
Yes, I've done veneer repair and replacement. I don't like the self adhesive veneer, I can't get it to stick and stay stuck.
I've used the paper backed version with some, but not major, problems and I've use the plain stuff too, with no problems.
I do prefer to repair the existing veneer if possible rather than replacing it. It's a lot of work, but makes for a better match.
Here's a multiple part story about my 9W-7 treadle cabinet I worked over:
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http://www.quiltingboard.com/vintage...e-t204377.html }
I had pics of the actual repairs but lost them in a hard drive failure. I used Elmer's Wood Glue Max and worked it under the veneer that was lifting with a plastic credit card and a hack saw file. Then clamped it thoroughly. After it was dried I sanded the large part under the machine base, and the two parts the machine attaches to. Then refinished it. I replaced the veneer on the lid. It didn't come out as good as I wanted. I had air bubbles and had to use an Exacto blade to make cuts then inject thinned out glue with a syringe. Ugh, what a pain. Then the color of the veneer did not match so I had to play with the stains.
Next time if I have all the veneer parts I will take the time to reglue them layer by layer.
Joe