Yeah the brabo and the north south choke fit well together. Biggest mistake I see with that is when the turn in happens people get over eager and since the choking arm is deep with the north south choke they keep it too deep on the brabo choke and don't get their choking wrist at the proper depth. That and staying north south instead of getting the proper angle. But it's an awesome transition.I do think getting the pressure right on the N/S choke is a bit more difficult than on most chokes. However as someone mentioned if you are heavy/strong you can always just escalate the pressure on chokes
stop blood
stop air
crank neck / crush face
and get the tap somehow or other and again usually having a good weight advantage I can usually finish it if I am reasonably near correct form.
However if it's not happening you can often bait a d'arce, guy has an arm in or you let him get one in then take a little step to the side and you are waiting for him as he comes up to his side. Got to be quick though. Even if you can tell you are not going to finish the choke you can make someone very uncomfortable and they will be eager to come up to their side to get away from the crush/smother.