No, the man is not durable at all. He'll play a few games then something will happen to him, he's going to be just like Trent Green. The Packers better find a decent back-up because I feel they are going to need one.
As of now I'd say yes. Assuming he doesn't fall to any injury or anything.
Craig Nall is a good backup to have as well, (man i can't believe im discussing a GB qb and its not favre for the first time since 92)
I have faith in Rodgers, and see him doing well.
If the Packers can get a few wins strung together (which i really think favre is afraid of the pressure to replicate last season) then maybe i think we might see 4 come back, even if he is getting his jersey retired opening day I see a Michael Jordan-esque way of Favre doing soemthing similar if the team shows to be rolling on all cylinders agaiBut for your question yea, i do think that Rodgers has a good shot of keeping the starting job.