one way plow
I think I know the out fit in Sask that you are talking about Cat140h, I have seen there plows in use but have never tried them. they also make a few different types of wings as well including a wing setup that is postless on the front. There stuff looks good and strong, and simple to maintain, but time will tell
When I ran a one way, I wound up taking the shoes right off and letting it ride right on the blades, like i said the double blades help, carry a bit more weight, dosent want to dig in as bad. it worked great on asphalt and Chip seal roads which both Manitoba and Sask. seem to have a lot of but the gravel was a different story. usually you had to wait till some snow built up and froze to the road, and then the plow would work good. unitll then, I would set it down close to the ground to get most of the snow and then use the mould board to catch the rest.
the only real problem I can say I ever had was plowing into a wind that blew the snow back across the grader. remember you get twice the snow that a V plow would give. I had a few problems with the breaks frezing on the grader, and it could get packed pretty tight in the articulation as well.