If I remember correctly, only AFTER law enforcement had visited JM's apartment, Longo told us WG had given them a description.
Then, Longo asked citizens to be on the lookout for a black male, 5'10"-5'11", 250-285 pounds, close shaved head, goatee, with a slight 'beer belly' and last wearing black jeans and a white t-shirt.
To me, that description was NOT what JM looked like (or what he was wearing) on the night Hannah Graham disappeared. That description was what JM looked like when he fled the apartment, while police were searching.
I still believe WG gave an accurate description of the person who was last seen on video with Hannah Graham, but the description WE heard (from Longo) described JM at the moment he fled the apartment (after he had shaved his head and, of course, changed his clothing).