Definitely take the beer money when I can it all adds up. And free beer just tastes better for some reason...
I like to keep in the back of my mind that Tvix degrades or loses some no matter what meaning even if the stock market traded par for a week in a row tvix would still lose 50 cents a day or so. It's like the people running it take their cut out every night while we're sleeping or something I don't know how it works but it does. Diogenes might be able to explain it.