It is an interesting idea to look through their merchandise, but the upper part IMHO resembles inexpensive “plushy” house robe with a belt and big pockets. The poncho that you show looks shorter and has no pockets. Of course things have to be layered, but consider this, the person has to appear more or less natural to Liz. What is wrong with them is not seen from afar. A house robe would be OK for a person stopping to buy stuff in early morning. I see such robes often, they are soft, comfortable and not always white. I have something that reminds me of what the person wears, it is of very light melange salad color. Off-white. These things are usually of the same length, I assume that the person is no taller than 5’4”. It falls rather low. JMO. On the other hand, vinyl would fit the purpose. Do they sell vinyl raincoats with pockets?
About the boots: I think ribs are a good idea (good grip on ice), but something makes this footwear inconvenient for the person - either it is a man walking in heels, or maybe the boots are of a larger size? It appears so from the video. The opposite (right size, but slippery) could be possible, but they seem to feel more sure when running back to the car.