JJ's job appears to be safe at the moment although Jason Anderson and Rober' Freeman have been impressive in the three practices I've attended. Both have shown good speed and elusiveness. The least impressive to me has been Vontez Duff who appears to be strictly a straight ahead guy with average speed at best. As far as hands, all have been good.
I would expect Jason Anderson and Rober' to be back there a lot on Saturday - and maybe even Albert Johnson who's small and shifty like Moses, and maybe even a bit faster.