Tipi's are a stable shape and deflect wind as well and sometimes better than other designs. These are tents and not cabins so you'll still need to do something with the snow when it builds up to much but a tipi is plenty sturdy in both wind and snow and the manufacturers that have been mentioned are good. I think because of the lack of a floor, you might get a little more condensation inside. I find a tipi/stove to be a preferred set up for late season because 1) the sun rises later and sets earlier so your in your tent more 2) because it's warm inside the tent, you don't need to stay in your bag 3) because your comfortable in your tent for extra hours, you can and will attend to little chores that sometimes get neglected because you were in your bag staying warm. Chores can include taking care of your feet, drying your socks, heating water on the stove to make warm drinks to stay hydrated, getting tomorrows lunch ready the night before so you don't have to do it in the morning, take a sponge bath cause you stink 4) the stove, if it's flat on top, lets you heat a pot of water for cooking while you heat other items with you backpacking stove. 5) once the stove is going, the tent warms quickly and you can get out of your heavy coat which is quite a bit more comfortable 6) organize your pack, change batteries before they go out, refill your canteen/bladder without getting your gloves wet. 6) they say you can dry your clothes and that may be but I don't run the stove any more than I need it. Once I'm in my bag, I don't touch the stove till morning.
Cons might be: 1) weight & set up time 2) finding wood 3) sharing your tent with wood 4) wet floor (I use tyvek under my bag) 5) condensation 6) tending the fire every 10 to 15 minutes 7) lack of headroom 8) you'll probably see a bug or two in your tent
All in all, for me the pro's outweigh the cons for a late season setup.