Neither has Scandrick. Doesn't make him a bad player.
Seriously, can some of you understand we are looking for depth? We are losing Carr and maybe Claiborne, we have late round picks and an undrafted CB behind them outside of Scandrick. Even IF we were to keep both Claiborne and Carr I'd want a signing like McKlevin. Go talk to Bills fans, they are not happy with him leaving due to him being a good player when he was healthy.
This would be a good depth signing, better than the trash Patmon and Moore we allowed a lot of playing time to.
So, I guess no one can have an opinion about a player, huh? McKelvin has been at best a mediocre player throughout his career who has been injury prone, and unable to hold down a starting job. He hasn't shown much through his career at all - why did they draft Ron Darby last year? Why did they draft Aaron Williams, and make him a starter at corner as a rookie? They did it because they didn't think he was an answer opposite Stephon Gilmore.
Frankly, were it not for the fact that he was a former first round pick, I think a lot of people would view him as being similar to a Sterling Moore. If you like him, so be it. Doesn't mean that anyone else has to.
If depth is what is being looked for, I would go for a guy like Jeremy Lane, who is five years younger, and has his best football in front of him. He's probably also a lower priced option.