Are any flight schools or clubs in Canada using Pipistrel's Alpha Electro or Velis Electro?
The only Pipistrel Electro registered in Canada is an Alpha, C-IZAP, registered to a private owner in British Columbia.  So the answer is for now, no.
Pipistrels, including the Electros, are licenced in Canada as Advanced Ultralights.  I don't see any reason an Electro couldn't be used for training under the Advanced Ultralight regulations (not for Private Pilot however).  Probably cost is an obstacle.