Maybe. Others have talked about the problems with hybrids and they might not make as much sense as simply expanding either the fleet as a whole or the parts of the fleet used for plowing. Also worth considering the city's whole vehicle fleet - use the garbage trucks as appropriate for mass response, but also use dump trucks, etc from public works.

Eventually there may also be more options with battery swapping - that's a lot more feasible with a fleet within a relatively small geographic region.