I did see some old pictures (the W+H days) of the heel counter coming up a bit more. I believe they do rework things here and there, most notably the stitching. The new derby and the parade boots have fairly different stitching at eyelet patch attachment to the vamp. I prefer this a bit more as it gives more of a continuity to the paisley type of pattern theme throughout the boot. I pretty much just deal in physical location, and the ones I've seen sitting on racks or during production all seems to have the vamp, quarter, heel counter meet at the sole (or fairly close). Then again it could just be due to old vs new last batches.
Can't say I've found anything wrong with them so far. If I have to really nit-pick, then the welt stitching on the brown pair could have been closer to the upper. The non-branded "Topy" also seems a bit softer than the branded ones. I've had the non-branded ones come apart at the tip before on another pair of derby (QC issue), but these are well done. Personally, I am pretty picky when it comes to quality; I got about 30 pairs of good (GYW or Blake) shoes/boots and I feel like these are probably the best pairs so far - in durability terms. I'll give it 2 winters to see how they hold up. Even my most used shoes barely see the light of day once a week.