Quite the opposite actually, it has some things we would have had to design for Fleming (and were), most importantly head of line blocking (multiplexed channels) and handling many connections on a single socket (we were designing a tcp live/active model that was really “bending” the protocol). So it is faster and more standards based, nice all round really.
[edit I should have said our crate is ready for publish right now, just a couple of tests/tweaks to be done, so the code is done and tested locally, we need to test on a testnet as well though)