Agree with above.
It will save the 6 month PCP mod of your basic Med Tech training. You still will have to do the basic and soldier training as well as 16 weeks of basic Med Tech training (at the Training Centre in Borden, ON) before your first posting. You will also need to do the entire qualification level 5A (journeyman) training which involves more time at the Training Centre in Borden, more time at a civilian college, and more time in the field (for a total of about 5 months).
Nonetheless, if you are interested in the Canadian Forces Medical Service drop on down to a recruiting centre, we are always looking for Med Techs, especially those (everything else equal) that we do not need to pay the big $$ to get a PCP qualification.
Being a PCP will give you a solid taste of prehospital medicine and confirm that you like working in this environment and like helping people. It will also give you some useful skills and knowledge, but it is no where near being the the "meca" of qualifications / experiences for the Med Tech.
MC