This is coming from a person who has had some medical and nurse training. nurses and doctors both have caring roles, and very valid roles. It's a general perception that doctors have the harder role but coming from someone who has done both this is not always the case. a nurse has to look for symptoms, give the medications, care, wash and reassure the person, explain the symtpoms to the patient- and generally do this for possibly 10, 20 other patients simultaneously.
Without the nurse the doctor generally doesn't find out the patients symptoms, there are no charts recording blood pressures, bm's, fluid consummed. doctors cannot do their job effectively without nurses, as they won't have the information about the patient to base their decisions on.
In fact on the wards the amount of times i have seen doctors being bleeped just to prescribe a drug the nurses knew the patient would be given anyway, far exceeds the amount of times i have seen a nurse just there to support a doctor- it can sometimes feel the other way round- that doctors are there to support nurses. :P
however, without the doctor there would be no full medical knowledge to make sure the treatement wasn't harmful, the diagnostic measures couldn't be made, a nurse doesn't have the chemical knowledge of the drugs mechanisms- just the symptoms, dose and effects, which could mean they dont know if the drug would interact with another drug, possibly to create a harmful substance.
they work together- compliment each other. andf to try to put more validity onto one role than the other is wrong- they are both needed.
However, with comission there is the issue of the role that will be played by the commissioned nurse and doctor. Is there the need for as many comissioned nurses as there are nurses capable of doing that role? and the same for doctors. But does a nurses role deserve to be a comissionned role even without being a managerial role? I don't know- i'm not in the services.