I guess the bottom line is always going to be...
If you dip, soda, sand or plastic blast, the key always comes down to how well the preperation is. I'm sure that if a soda blasted, or chemical dip, or stripped paint job is properly cleaned, there will be no issues.
The likely hood of problems when chemical dipping and soda blasting is greater because of the extra cleaning and prep needed to ensure a quality paint job. There is no cutting corners when preparing a metal body.
