I was happy to see the return of the Mysen this year; I have last year's pink/purple stripe (size medium; normal street size for me) and wore it more often than I thought I would. I purchased the brown and blue. There's definite pros and cons.
Pros - fabric quality is nice, certainly feels like organic cotton. The blue and brown stripe combo is awesome.
Cons - everything is much longer and bigger. I don't mind the longer sleeves (although now I have to turn them up - but last year they were too short) and the top is sooo long. I'm 5'4", short through the torso and the medium lands mid-butt.
I love the colours, but not sure if it's a keeper. Feels a bit pajama-y to me because it's so big, wide, and boxy. I would recommend sizing down in this colour if you liked how they fit last year. Not sure how I would style this for work, it is very much a lounge-looking shirt.