By that definition sure. But thats not a pocket passer. Thats a mobile qb/ scrambler. But then drop back isnt really right either, as virtually all cfl teams run the massive amount of plays out of the gun/half gun formation and not under centre. Which is where you drop back from. A pocket passer plays inside the tackle box, steps up in the pocket or moves the pocket in response to pressure. A mobile qb who will break a run, roll out, plays mostly in gun formations, and doesnt require the added blocking schemes. Its also harder to distinguish in this era of the cfl as the majority of qbs sport the same skills currently. No ones starting a qb whose a threat to run for 1k in the season or running for negative yards over the course of the year.
Pocket passer is really more of an american term now. Like the Lber/db sub terms we use here. The us doesnt use boundary or field corners, etc.