I am an RN in philadelpihia and the hospital at which I work is also moving to the all RN model. My floor (cardiac step down unit) was the first to roll out this model. RN's max out at 4 patients with a charge nurse to support during busy times. Patient satisfaction did go up with this switch. It is a very busy unit with a lot of completes and it is completely doable as long as you have a supportive team that you work with to help you at busy times. I feel doing everything for the patient goes me better control of what's going on (better skin assessments, knowing your vitals rlght away and changes from baseline).