I bought some and used them for a bit of my commuter. I liked the ability to stretch out my riding position a bit especially when riding into a head wind and having a different hand position.
But…they are too narrow for brake levers and gear shifters together. The flat bar section becomes really cramped if your running two brake levers and two shifters and I found it difficult to use the brakes effectively.
Probably better for running on a singlespeed/fixie but wouldn’t recommend it on a geared bike.
I still have my bars so if you’re interested in having them, you can for a fiver plus postage.
Edit: I’ve got pics online but can’t link to them at work, so will sort it tonight if you want to see? :-)