I have only used a tractor rear blade before switching to a pull-type blower after several years. The pull-type blower is far quicker for my conditions and I never use the rear blade. In fact, my neighbour has it and I just get it if I need it, which has been a couple of times in the last few years. I used to grade my 800' gravel drive with it but find the landscape rake with guage wheels far more effective.
As others have noted, I think the most effective snow clearing tool depends on local weather conditions and driveway configurations. For my area's winter a blower is more effective than a blade. We normally get a damp fall and then cool weather which freezes the driveway. The following early snows are generally light and can be packed over the gravel. Starting in mid December we get several 6" to 8" snows with one or two heavier snows. It is cloudy and humid most of the winter so the snow never leaves--it just gets deeper and more dense. With a rear blade the snow gets so heavy that the angled blade eventually pushes the rear of the tractor sideways (even with chains). So you eventually need to plow in reverse to push the now-frozen piles into the ditch.
I have a neighbour with a truck plow who calls once a year to get me to move the snow banks with the loader and blower. There are other neighbours who appreciate help with heavier snow dumps because the blades can't effectively move it far enough off the road.
I think a blower is quicker than a blade for clearing wide parking areas or turn-arounds.
I regularly clear three other 1,200' driveways. I would not be able to do that with a rear blade. Driving in reverse to knock down piles is too hard on my back.
The gravel driveways aren't a problem since they generally have a packed snow base and no large rocks. But in the spring the snow base can melt. You can manage that by raising the blower on skid shoes or changing the angle with the top link so it is less aggressive. The other key is to have good consistent gravel on the surface and grade it so the crown is not too steep.
One of the driveway's gravel is as good so rocks can be a problem if there is not a good snow base. Rocks can also fall from a steep bank in mild weather. I handle that by adjusting the skids and keeping farther from the bank.
A cab would be nice but is not critical for my area. There is virtually no wind. Besides, I'm one of those who actually enjoys winter and snow(especially snow). That's another advantage of a pull-type over a front-mount blower on a cabless tractor. You don't drive through the blown snow.
An important option to consider if you do get a blower is a hydraulic or electric chute rotator. It is handy for the areas I clear.