Seeing you are also a brewer - would you vacuum seal a bottle of beer?
The answer of course is NO!!!
Roasted beans eventually stop degassing - but at that stage they are stale!! And that is how the "Supermarket" vacuum bags are packed - with stale beans!!
The crema we all love and want is a combination of carbon dioxide (produced during the roasting process) - and volatile oils (the flavour of the coffee). After a few days the gas pressure inside the beans stabilizes - to atmospheric pressure - and they stop degassing. Apply a vacuum and you suck out more of the carbon dioxide and volatile oils (being volatile a vacuum causes them to "boil off") ....
You can vacuum store them- they will keep longer but taste flat with little or no crema- just like a vacuum sealed bottle of beer!!!
The best storage method is one way valved opaque bags, in a cool, dry, dark place..... the carbon dioxide and volatile oils will still decrease (the carbon dioxide being slowly replaced by air and the volatile oils slowly becoming rancid due to oxidation) - so use them within three weeks of roasting.....
Vacuum sealing and/or storing in a fridge/freezer are not good for roasted beans!