Would you want your family doctor preforming heart surgery on your son?
I for one, would want my son to have a person that is trained to preform the procedure, doing it.
You could sit here all day and go back and forth on this issue. Timmy stated it right, When you became a medic you knew what was expected of you. If you want to do more for a pt, then go to med school and learn how!
If you do something minor, that may be a little outside your SOP, then as long as you can back up your decision, go for it!