Ok, so what I am seeing with the b2b1 ender on its own is that not everyone will tech it and not everyone knows about it. Even when this becomes something everyone is more aware of, they still need to tech.
I really no longer see a problem with using this combo ender. Yes on paper you can tech out, but not everyone is going to get the tech every time. They still need to react to this. Even if they do, they are back into TKP range.
Started using this again more, and a few times here and there is surprisingly really useful.