You could argue that a collaborative beer made by two breweries ought to have a collaborative launch. If so, here's one that's getting exactly what it deserves.
In the spirit of togetherness, both venues will be pouring their own and the others' beers on tap, with the teams from each also split between one another. Really, the only thing that won't be in both places at once is you – although with a bit of pedal power you might manage both in short time.
If you can't make it to the launch night but want a taste, you'll have to make plans to visit another day as this one's a taproom-only release.