Swapped my Bontrager Crowbar flat bars on my Trek 7.3 FX for Novara Safari bars. The integrated Shimano rapid-fire shifters/brakes fit fine.
Many more comfortable hand positions.
That's all. (I guess it's more interesting riding with them than talking about it. )
Here's a pic, but somebody doesn't know that they are backwards:
Now here's what a Novara Safari bike looks like, so you know how the bars are supposed to be mounted (click on another image for a better view: )
The ends should be closer to the rider. Backwards, all the advantages of the bar angles are wasted.