I use a Black and Decker Workmate with a piece of laminate bolted to it. This could be taken down and stored if necessary. I did this to conserve space in a two bedroom apartment. I have some shelves behind it up against the wall that my equipment sits on. My press is bolted to the laminate, also capable of being taken off the laminate.

I think the idea of simply storing your powder in a cooler location and carrying it out to the garage when reloading makes sense.