If you're a gambler, McCown could be a good #2 QB. He certainly has all of the tools in place with 2 studly WRs and a coach with a track record of high scoring offenses, plus a defense that will put you behind a lot. Mostly though, McCown can fake hand-offs to Emmitt **sarcasm warning alert systems to Defcon 5** thus freezing the D and giving him endless time and wide open receivers to chose from.
In the first few weeks your #1 QB should, barring injury, not be able to play himself out of the job. The Emmitt the Clown experiment should be over and he will either be gaining 2 yards per carry, injured, or miss time as his daughter's soccer season gets underway. Then McNown should be able to settle into the job and if he has any talent he will show it.
I think, therefore I am. I think fantasy, therefore I am unreal?