I have lived for a month at a time; numerous times in a wall tent.
I had an 8x10 that worked well; except no matter what waterproofer I put on it; it still leaked in a downpour.
Ditto on my 10x12; outfitters in this area put a plastic tarp over their wall tents because of this.
This last fall a friend from Sweden bought a 12x12 Cabelas outfitter series tent; can't remember the dingy dang name; but it has a center ridge pole; and it withstood wind water and snowload with absolutely no problems.
We hung wet clothing on the center pole; and fired up the woodstove; and it kept us warm and comfortable.
Plus it has windows so you can stare at the stars at night; and vents to take the heat away in the summer.
Its not canvas; it repels rain and snow like I mentioned; and it has plenty of room ( and you can attach an additional vestibule (sp?) to the front if you want.
I am 6-3 and had no problem walking around; and that is an issue when your tent bound.
It is just plain and simple a fantastic tent.
My oldest son bought the 9x9 version of it; and he thinks its the neatest thing since velcro. He now camps with the family and even the little wife is happy with it.
I did learn ( plenty of headroom for that) from the Swede; to put a big rock on the woodstove; the bigger the better; it heats up at night and in the morning the tent is still warm; though the fire is out in the woodstove.
Neat trick.
Pointed roof styles like the cabelas and Tony's shed water and snow - and its when your sleeping that it normally snows and you don't know it. I have had wall tents sag to where they almost touched me on my cot; and too; woke up with a puddle of water on my sleeping bag cover from a leak in a wall tent ( always always always if it will leak- it will be on you).
I like being able to zip bugs out in the spring; and summer; and not having to worry about wind and rain.
Its like a home away from home with a good tent!!