I have done a few over the past few years. I have only ever used a hairdryer (medium setting) and peel back very very very slow. A lot of glue residue will remain and you can safely bank on about 5hrs or more to remove the glue. To remove the glue I use both 'goo remover' on a rag and shellite.
There is a very high likelyhood of removing paint. Just be aware and take this into consideration before starting.
