Vocation changed from Storeman to SVC Medic

Hi, I’m a School V warrior and I just got my posting to become a SVC Medic.

What is the difference between Combat and Service Medics, and do I also get to wear the Paramedic Badge?

Any expectations to have and tips needed?(I heard that I will have to do 8 IVs throughout the course and that it is 12 weeks long).

Lastly, will my initial vocation as a storeman affect what I will do later on? Like only doing Dispensary. Btw am I posted to a unit or a medical centre?