I emailed the guys at Rocket about these just after I put in my large smoke order, they said that they was in some sort of testing with the government here and might be available in 1-2 years.
actual response from Rocket -
"Right now, the only legal product in Canada is the wire pull smoke grenade.
We are currently working on authorizations for additional products. These products are in testing with the government of Canada and will hopefully be released within the next 1 to 2 years"