I've been using a Redshift stem for a few years now and don't give it any thought. The idea that the handlebars shifts angle doesn't really matter, it isn't like it goes up and down 15 degrees. It is a lot more subtle than that. I'm not riding on gravel, mostly roads. I wish I had something like this over all my years of riding, it really makes it easier on the hands. But really, there is no exaggerated motion with them, just shock absorption. It is tunable too, you can change the elastomers to give more or less motion. I keep it on my road bike, but when I was looking to do a tour the plan was to shift it to my commuter/touring bike.