I just received the remake of my topcoat. The first one was much too tight in the shoulders and the chest, which I found odd since I have a well fitting suit from them (superhero grey twill). Indochino's remake process is fantastic, the new coat is a great fit. As a side note, when I showed the original to my tailor to get his opinion on the fit, he told me that it was of excellent quality.
Regarding the warmth, I think it comes down to a debate of form vs function. I haven't worn the coat outside yet, but I can tell you that it probably wont be as warm as a parka. The topcoat is not in the same class as a parka, and can't really be expected to perform the same. I think that if you layer your clothing you will be warm. It might be a good idea to purchase the topcoat and then return it if you find that it doesn't meet your needs. If you're in Canada, shipping to BC isn't that expensive from Canada post (~20 bucks).
I chose the single breasted option so I can't help you with your picture request. However, let me know if you'd like to see some pics and I can snap a few with my phone.