I'd removed the stock carbon bars early into ownership of the bike for some higher rise alloy bars.
Because I like to tinker I refitted the carbon bars and went for a ride to feel the differences and see which set up I prefer.
Straight away I could feel the carbon bars gave more feed back from the front wheel but for me not in a good way.
I could feel every bump, rock, stone, twig, and it soon became exhausting on my wrists. I can only assume the Newman bars are very stiff and have next to no dampening.
On steep techy descents it made the front end feel very twitchy.
One of the main differences I wanted to see was on climbs, which was marginally better with the carbon bars as I didn't have to move my weight so far forward than with the 50mm rise spank bars.
For me the spank 50mm rise bars are a huge improvement for descending and general riding comfort. The more upright position on descents gave me more confidence and the vibration dampening, while giving less feedback I felt I had better control and was easier on my wrists.
I do have some 38mm rise nuke proof alloy bars which I'm going to try next, they could be the sweet spot between descents and climbs.
I'm also interested in trying the vibrocore version of the spank bars.
But I need to settle on a rise height first.