While I agree that it's good to give yourself every advantage in regards to driving there is nothing saying that winter tires would have prevented this.
I drove my 86 5.0L Mustang through many winters and never had winter style tires. Traction was non-existant, of course. I drove the Coquihalla Highway during December as well, but only because an avalanche shut down the Fraser Canyon. That was a pretty awful drive because the trucks all had chains on and they chewed up the base layer making the whole trip as if I was driving on a wash board, which made the ass end of the car fishtail the entire pass.
I drove for 20 years up northern BC and never encountered "black ice". I've driven where people claimed there was black ice, but it was always apparent to me that there was ice on the road, either from a sudden lightness in steering or a sheen or sparkle of the road.
I'm not commenting on your situation at all because I was simply not there but I find that the term "black ice" up north was used like the Harley riders "I had to lay the bike down". IE: Black ice was used as if there was no way anyone could do anything and the Harley rider acting like laying the bike down was the best option he had and he or she purposely did so - which would always be the worst choice.
Anyway, really sorry to see your truck in that state. I've always preferred cars over trucks because of the rollover potential of taller vehicles.
Oh and by the way, I have over 4 pages on my driving abstract..... :thumb: