I don't think these would be real useful for beer though. There would be problems with purging the air and the general problem of spilling during the process.
One issue that keeps even small brewers (hundreds of cases at a time) have issues canning because the typical blank can order is in the tens or hundreds of thousands; with a single pre-printed label. You can heat shrink onto a blank can to help and use a 10,000 blank order with multiple varieties of beer...but on the homebrew scale?
On Tap: Dark Mild (x2), Honey Hefe Fermenting: A.Bastard Clone, Wee Heavy, S/70, Eng. Barleywine On Deck: ?
We had one Nebraska craft brewer that had to give up canning due to the minimum order issue. His minimum order would have been 3 or 4 years of production.
