Carney has never kicked dep. Weatherford was pulled against Tampa after he kicked it out of bounds and they started on the 40. i think we'd be better with the rook in the long run. He isn't afraid to hit anyone either.
If he practices and does it on a regular basis he should get comfortable with it. He has become a very solid punter and that is under big time pressure with teams coming to try for the block. I would think that kicking off is just technique and practice. I think he could be good.