I've not heard much activity on these frequencies. More on 156.855 during the floods in Turner Valley/Black Diamond a number of years ago. Nothing in Calgary during floods in 2013. Wasn't close to High River, etc in 2013 to hear any activity. In Blackie during floods of 2013, fire was using their repeater.
Being that it's simplex and used on hand carried portables at low power, I'm not sure what you would expect to hear from a static position, unless the incident was right beside you. Especially in Calgary where there is a full 800 MHz trunk system which the fire department uses - and they're not on either VHF nor UHF.
VHF Firetac is used extensively in the areas where fire departments are still on VHF analog, using it as their fireground operations channel. UHF Firetac is used the same way for some UHF analog departments, but is not as common.
99% of STARS LZs down here are on either Provincial Ambulance or on rare occasions RCMP T9. Lately they've been known to communicate with EMS on one of the MA11 channels depending on whose district it is.