I've just got back from a try-on appointment at my local Apple Store.
I have ~155mm (~6") circumference wrists, with a wrist width of around 50-55mm.
I had been wanting a 42mm Apple Watch, but had been worried that it would be too big because of my small wrists.
However... it's fine!If anything, the 38mm looks small (to me).
I tried the 42mm Stainless Steel Apple Watch with Link Bracelet (no demo versions of the Space Black), 42mm Stainless Steel Apple Watch with Milanese Loop, and 38mm Stainless Steel Apple Watch with Milanese Loop.
The 42mm with the Link Bracelet was great
The Apple guy had to take out eight links, which still left a couple more removable links on each side of the clasp, so it could have gone smaller still if needed.
It looked good. No issue with it looking too big, or dominating my arm.
I then tried the 42mm with the Milanese Loop.
The Milanese Loop *felt* great. Very light and soft.
But... My wrists put me at the bottom end of the size range for the Milanese Loop, and it really did not look right.
I had to have it as tight as it would go, which meant that the magnet end of the band came all the way round to the other side of the watch.
It just looked wrong. It made it seem untidy. It also looked too big even though the case itself was the same size as the one I wore with the Link Bracelet.
So, I then tried the 38mm with the Milanese Loop, to test both the smaller case and the shorter band.
The Milanese Loop itself on the 38mm case was the perfect size.
But... The case just looked too small, to me, despite my small wrists.
I also had a quick try with the Black Sport Band, but it was too big so must have been the M/L one rather than the S/M.
Setting aside sizing issues, the Watch itself looks great in person.
So, decision made: I'm keeping my 42mm Space Black Link pre-order.
Exactly the same situation and size as you. As a man with these small wrists I was positive I would have to go with the 38, especially because I don't like bulky watches. But I tried them both on in store and the 42 is definitely the way to go. Doesn't look big at all, in fact 38 looked small. I was pleasantly surprised. I'm just torn between the stainless link or space gray link. I keep going back and forth.