As noted late last night here on the website, numerous WWE talents have been hesitant to work with Skip "Ryback" Sheffield. Several talents are saying Ryback is the type of guy who will cause a severe injury to someone and they're just waiting for it to happen. He's said to be extremely reckless in the ring.
Despite these reports, Vince McMahon is said to be a huge fan of Ryback. The only issue McMahon has with the gimmick is the numerous "Goldberg" crowd chants. The chants are edited on a weekly basis in post-SmackDown production. Obviously, the chants can't be edited off RAW or pay-per-views due to the shows airing live.
Source: The Wrestling Observer