Today's experiment ... Made some almond butter using almonds, a little olive oil and some milk stout. Then I put some of that in a french press and poured in 12 oz of Black Hog Nitro Coffe Milk Stout. It is now sitting in the fridge. Will press it in a couple of hours to see how it comes out.
Technically, you can infuse any edible food into beer, that includes almonds. I don't think it's unusual though, you should try it and let us know. Beer is proof that God loves us and wants us to be happy -Zeriods
I've used the French press for a lot of beers. I tend to find that it isn't the best, if you don't have a way to recarbonate the beer (I force carbonate it using a soda carbonator). As far as infusing with nuts go from a homebrew standpoint, you'll want a way to extract the flavor and not have the fat get into the beer. The fat in almonds will be bad for head retention, etc.