Buy them, try them, love them. They look cooler, too. I have medium-sized hands and was debating whether to go with these or Ourys. The bike shop that I went to had these, and I'm glad. Thin grips give you such a more connected feel to the bike.
Control instantly feels better.
As for vibration dampening - I have a Marzocchi. They work very well without gloves. I hate gloves. They feel just right in your hand, I feel more conected to the bike when using these. I think that was on the package.