I would expect a "bird" dog to hunt upland and waterfowl, maybe barring a true specialist like an English Pointer. I have shot pheasants that landed in water before, the dog better swim. But a versatile should also hunt fur as well, track, point rabbits, close with and dispatch furred predators, like cats, coons, oppossum, fox. Blood track wounded deer. There are those that use their versatile gun dog for treeing bears and lion, or holding at bay a boar.
Granted you have to look to countries like Germany, where much of this started, and where as a hunters you are virtually obligated to have access to a fully trained utility dog. I know most Americans by far do not push the "fur" part of a versatile breed, they want no part of it. I have no illusions about this. That is what makes certain breed clubs out there special, they are keeping the work on fur in the lines and in the breeds. To each his own. Is my drahthaar a versatile breed? Yes. Is she a versatile dog? Not yet, but we are working on it.