Gryffin, I remember that you bought this when it came out, and I was hoping you'd chime in.
I do see the concern many of you have about the size. It's right on the edge for me - part of me really loves it, part of me isn't sure. I suspect shortening the arms would make it look more intentional.
One interesting thing about this cut - it's actually bowed out slightly, not a straight rectangle. I think that's how it accommodates a larger chest without ruining the boxy effect. But, like many boxy fits, I think it looks best either on tall stick figures (coat-hanger-like effect, where it hangs and doesn't add bulk) or fuller figures. eg, Everlane's square cut oxford shirt looks fantastic on larger sizes and strangely in-between on me.
I think I'll stop by the store again today (conveniently -- or dangerously -- up the street from me) and try it with skinny jeans and a fitted tee. I do have broad shoulders so I doubt I can size down, but I tried the 00 over a top with bulky sleeves, so it's worth trying again.
Jesskams - your point about "EVERYBODY is wearing this" is another concern. Not because I worry about following trends (I'm happy to, when the trend matches my style) but because I worry it'll look dated very quickly. And because, like you say, it might not represent my style as well. (I'll ask my boyfriend!)
This photo was my original inspiration for my glen plaid quest, but I doubt that I could pull off this full look in my style and my setting:
https://www.thecut.com/2017/11.....dress.html