I have used both the Oware AlphaMid and the MLD DuoMid for snow camping in the Sierras for 4 or 5 years now.
I prefer the DuoMid to the AlphaMid since it has more tie outs, very nice door, hooks to hold back the door when the weather is nice, etc. With the DuoMid if you dig down, you can create a lot of room.
You do not describe your expected use case and use the word "blizzard" at one point. I mostly am snow camping below tree level. When I expect a big storm, for example on my February trip to Mt Shasta, I take my double walled 4 season tent (Big Agnes StringRidge). While the DuoMid can take a fair amount of snow load, it is really hard to keep out spin drift during high winds.
I have thought about asking MLD to add a snow skirt. I think you could ride out a blizzard in a Duo Mid if you pitched it properly and dug it in. If the blizzard were in the weather forecast, IMO you would be better off in a double walled 4 season tent or plan the time to build a snow cave.