I'm personally not a huge fan of node, and I prefer to write non-blocking code in Aleph/Netty (which is closer to twisted in terms of potential to block due to blocking java libs) myself.
But, I can understand on a large team not wanting to deal with the potential for blocking libs.
That said, if performance is that important, it should be part of your test suite, and should catch that.
I'm personally not a huge fan of node, and I prefer to write non-blocking code in Aleph/Netty (which is closer to twisted in terms of potential to block due to blocking java libs) myself.
But, I can understand on a large team not wanting to deal with the potential for blocking libs.
That said, if performance is that important, it should be part of your test suite, and should catch that.