I can add a little bit.
If there is a problem with the police distinguishing the two and the pellet gun's being used in the commission of a crime, it is already covered under the definition of a weapon in the Criminal Code and they can lay charges as such. However, for the general use of these tools, there won't be any more problems than there have been in the past.
I might ask you the question, what did police forces do 20 years ago with pellet guns? Usually they would go up to the individual, identify what was being used and how it was being used, and that was generally the end of it. Without these kinds of changes put into place, the possibility for criminal charges being laid, because the police forces aren't sure of what the regulations actually are, are still there.