Hi,
I have some of them and I like them a lot. I have a some no name ergo grips and some short stumpy bar ends, that are in front and behind the bars so your hands rest neatly on them, they are giant contact ergo. I find this setup very comfortable but sometime they feel to wide.
The contract points of a bike are such a personal thing, and when you find what's right, you should stick to it. If you hold a pencil in each hand and then put your hands in the natural riding position look at the pencils, you will then see the relevant angles your bars should take.
Peter.