yup, saw the implementation. We were pondering usage of `ngModel` on the bootstrap side but the fact that `ngModel` gets "locked" into an isolated scope is just too confusing for people. On top of this I'm not sure it is super-useful to have things rating / pagination participate in form validation - IMHO it makes more sense to restrict values people can enter.

For me the "deal breaker" here was the fact that we've got already examples illustrating integration with `ngModel` and those directives show usage of `=` binding.