Airbrush with compressed air canisters

[VintageRacer]

What are the problems with using the likes of these with an airbrush?
http://www.wonderlandmodels.com/prod...essure-bottle/

I'm about to paint my first shell and whilst it won't be complicated, I'm considering getting a budget airbrush set-up rather than using spray cans.

The biggest expense seems to be the compressor which is why I'm looking at these, but I wonder if they will work well, and how long they will last.

Not planning on doing loads of shells.