I'm really interested to see what the price point on the collection will be, for every item sold an equivalent will be donated to smartworks which is great but it will mean prices will be higher. Also given the environmental stuff it will be expected to be sustainable and not use sweatshop labour.
I'm also interested to see how daring they go in terms of style, its workwear so you should really play it safe but you can get a plain black work dress in any shop maybe at a better price point because of the donation. But then if the design is more interesting it dates, you see it everywhere etc.
Its bound to sell out in no time, I mean Holly Willoughby's M&S stuff sold out very quickly and she has nowhere near the international fame of MM. I predict large swathes of it will be sold on ebay by canny resellers.