The out of shape comments were no doubt directed at Johnson & West, who've been injured virtually all of camp. There was a report out earlier that said they were growing frustrated with Johnson not getting back on the field sooner. Montgomery directly alluded to RBs needing to come to training camp in shape & be able to heal from minor injuries quickly. The comments regarding Crowell were about him showing the coach he wants the job, doing the little things, etc. The only negative I've heard on his play in camp is having trouble with a couple handoffs from McCown on the first day of camp.
I think Johnson could be their 3rd down back if he can pass protect & shows well, but he's not a feature back type. West is just a guy at this point. The starter's job seems to be Crowell's to lose. With his talent & that OL, there's enormous upside.