Thought I haven't personally dealt with this issue, I had a friend who had a great perspective about situations like this. He was a guitarist in an indie band who also worked as a video game tester. So his friends primarily consisted of hipsters, college friends, and gamers from work. You can imagine the culture clash between all those groups. Oddly enough, I was his friend who existed in all 3 groups.. I went to college with him, i went to hipster clubs, and i worked with him.
His attitude was, "who am I to determine who should and should not hang out with each other?" When he was younger he was fixated with this idea of "different types" of friends but as he got older he was just fed up with handling everybody. So, he just mass invited everybody to every party he threw. From his perspective, it was like a giant comic book crossover and he himself was just curious as to how it would all pan out. It was amusing, seeing a gang of tight jeaned hipsters flipping over a anime loving gamer in Jnco jeans upside down for a keg stand.