Rendered Product shots for packaging

As mentioned, yes it’s done quite often. Though personally, good photography will almost always communicate better than renders (the exception being, very high vis renders from a production house… i.e. Beats/Apple). For a lot of industries (watches, softgoods, etc.) – photography is the standard and renders stick out like a sore thumb.

Also worth noting, that whichever method you go with – you’ll want to have the best retouchers you can afford.

Some favorite examples below:
http://www.travisrathbone.com/travis-rathbone/still-life