I use both. One big difference is tying the braid directly to the treble, it will definitely foul the treble often, as mentioned by Allan.
I also agree with Roccus. I live in pogey central and have them 2 minutes from my house and usually see them before anyone else does and have them longer than anyone else does. I can tell you that using braid will lose you some snagged fish over using straight mono. The reason behind this is the no stretch factor. When a pogey is snagged and it is coming in tail first the fast passed whipping tail will hit the braid and the second you give that fish an inch of slack it can kick that treble out of its self. I have seen it hundreds of times. This can also happen with mono but it is far less likely because that inch of slack is now being driven back into that fish sort of like a rubber band.
Also - Snagging with a 1-2oz sinker and 2 trebles on dropper loops above the weight is far more effective. Odds of hooking up are greater, trebbles can be smaller for less damage, and if fishing rocky bottoms the weight has a far lesser chance of being hung up when the pogeys are down deep vs. a weighted treble. Keeping the rod tip up with a weighted treble also helps the hook points to point up and thus avoiding snags.