I thought the plastic holder thing was meant to place your just finished empty can of beer......

I guess I must be doing it wrong.

Shakers vibrate not shake and I have not tested this at home. But I did bring some beers with me to markmons last time I went and they never tasted flat or spilled so I think your good to go. Everything he has shakes and booms in full color if possible. I would say adding sub would have a better chance at wrecking your drinking experience

I would think we would have seen horror stories on pinside if it did anything to your beverage.
Or a disclaimer from pingulp etc...