Not always. Many people have been successful at swapping the included Protank heads out for spare eVod heads they had lying around. I, on the other hand, have only had 1 out of all my spare eVod heads work in my Protank. Even then, that one head caused leaking within the first few hits because the gaskets are different sizes between the two. Some people prefer the thicker gaskets on the eVod heads because it restricts airflow, but as many others have figured out in the pursuit of a tighter draw, altering the airflow that was intended for the device leads to leaking more often than not.
If you already have spare eVod heads to use, give it a try in case you find it works for you. Otherwise, I wouldn't spend money on a pack of heads that you only intend to use in your Protank.
As the theme of this forum tends to go: YMMV.