depends on your tolerance to either one
if you have zero tolerance to benzos and how they affect you 10mg and a beer can make it feel like 100mg and a 24 pack of beer
IME ive done it and its been "safe" take my exp with a grain of salt though its not until you take excess of both that you run into trouble
since both affect the the same gaba receptors they will potentate each other if taken together or in conjunction
IMO i wouldnt mix them either one is a fun exp on its own
personally i would drink a few beers and hang onto the valium for another night
or take a the valium and leave the beer for another night
in all honesty there is no rec value to mixing them whatsoever i mean why would you ?