Re: Is it worth having a VHF radio in Northern Saskatchewan
Well, FWIW, I would not go without a VHF, preferably with the antenna at the mast top, and with DSC. You may not be able to reach anyone if you're in a really remote area, but if search and rescue has to go looking for you, they'll be listening, and then you'll be glad you have it. Since you have SPOT already, it sounds like a VHF would compliment it nicely.
I use a VHF with mast top antenna, and I also have a waterproof hand-held (5W maybe?), but I'm in an area where there are a lot of boats. the hand-held is what I use almost exclusively, as I'm close to everything and don't need high power or antenna for 'normal' stuff. I also pass right by the USCG and Sheriff's marine station in the river on my way out, so there's no problem reaching help in my regular sailing areas. Marine weather reports and forecasting is also nice to have, but in your case, I have no idea if you can receive it.
Some folks carry on regular conversations over VHF (on channels assigned for such use, like 68, 69, 71, and 72), but I just monitor 16 unless I hear something interesting going on and switch to that working channel to eavesdrop. Erie Canal lock and bridge operators are also contacted via VHF channel 13, but again, that doesn't apply to you.