Waterborne requires different equipment and techniques to spray.
If a body shop did the paint they have and use waterborne paints.
The paint quality is excellent but a hobbiest is not set up to spray waterborne.

 

He didn't say he was spraying it, but spraying water is not a big deal, increased flash time yes, which can be reduced with air movement, ( hence the need for 'blowers' )... some lines require different technique than water, but most, not big learning curve, if a guy can read a TDS, it's not that hard. A dedicated water gun? If you are a pro, spraying daily yes, but a one time use?...clean your solvent gun and go at it.

 

Verry true, don't be affraid of water, it's actualy pretty sweet. If you have a heat gun use that instead of a blower. **** you could probably use a hair drier, LoL.