I have talked about this before on MT, so what the heck why not talk about it again.
About 20 years ago I was use to get together with a bunch of martial artists on Saturday afternoons and basically beta the heck out of each other, no attitudes (they didn't last long if you showed up with one), no anger, a lot of fun and you learned a heck of a lot.
We all had different backgrounds and many of us came from different styles, Taiji, TKD, Kenpo, Mantis, Aikido, Judo, Karate, etc. I don't ever remember anyone getting upset losing or making a big show of winning. I won a few and I lost a few, I learned respect for Aikido there and I took the greatest (and coolest) beating of my sparing life there from a Southern Mantis guy. Also got beat pretty good by an American Kempo guy too as well as shown just how good and devastating a good fake cam be from a tkd guy. I also learned that most had no idea how to defend against a good Xingyiquan Piquan, but then that was all the xingyi I knew then so they learned how to avoid it and I learned you can't keep doing the same damn thing over and over again....it hurts

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We did no underrate that experience we thought it was incredible and 20 years later I miss it, but there was a lot of learning going on there and there were more than a few quality MAist there too