Nice pics, Manannin and Edub!
Personally, I like the ones he wears in AoU over the strike boots and so far from what I've seen, the CW boots. I like the gaiters and the red stirrup. However, like most it seems, I prefer the white stripes on the biceps on the AoU suit and I think I like the CW hands/gloves more. I also prefer the lack of the red around the star on the CW suit.
Now what I think would be really interesting to see, when the CW Cap figure eventually comes out, is if people customize their own Cap figures using the best qualities from both the AoU and the CW suits. For instance, leaving the AoU undershirt on with the white stripes on the biceps and putting the CW vest piece on over it that doesn't have the red around the star. Also, depending on your preference of boots, using the AoU boots or the CW boots. And again, depending on your preference, using the AoU gloves or the CW gloves.
I would personally customize mine using the CW vest piece without the red around the star, over the AoU undershirt with the white stripes on the biceps and most likely keep the AoU pants and boots, but use the CW gloves.
Of course, this all depends on if the CW Cap figure (I hope it does) retains at least roughly the same body size as the AoU figure. Also, the zipper on the vest pieces are very fragile and once taken off, very susceptible to breaking.