Hi Trimmer.
I guess it would work OK, but why bother ? You may as well use normal auto enamel BC/CC or acrylic.
I think the whole purpose of this was to avoid spraying - plus - in terms of using the Brightside paint, the point is that it can be rollered due to its self-levelling properties. I am not sure if Rustoleum is similar.
Spray painting takes some skill I believe - rolllering , once you trial and error a test panel and work out a good formula is pretty easy.
Hence the beauty of it.
My 2c of course.
Cheers,
Frank.