I bought one of the roasted D&B ones and it arrived yesterday. The wood, binding, and frets all look quite good, particularly for how inexpensive the neck was ($75 shipped). Little flaws here and there that you can see upon close inspection, but perfectly acceptable for a neck this cheap. The fretwork seems ok, but I can't know for sure until I have it strung up under tension. The nut is what will probably need the most work. It needs to be sanded down and the string slots need to be worked on, but that's true with all new nuts.
Comparing it directly with an AllParts Jaguar neck I'm currently working on, there's the tiniest difference in the headstock shape, but you would have to be looking for it to notice. Also, the tuner holes are inset a couple mm further away from the top edge of the headstock. Again, not something you would probably notice without looking for it, but it does mean that the tuner knobs stick out a couple mm less than normal. Not really an issue. It does have 10mm tuner holes, so if you want to use vintage style split shaft tuners you'll need conversion bushings.
The decal is fine from a distance but up close you can tell it will get destroyed quickly unless you go over it with clear. That's not a problem for me because I never intended to keep it on there. A minute or two with some light grit sandpaper and it was gone. I'm already in the process of painting the headstock to match a Bilindastang that currently has a Squier VM Mustang neck on it.
Nothing I've said so far has me all that concerned, but there are two things that could cause some problems... or not. First, when comparing it directly to the AllParts neck, the distance from the highest fret to the heel on the new neck is a couple mm shorter. That will have to be adjusted for with the bridge saddles to get the intonation correct. Those couple mm can make a difference depending on how far back the saddles can go. Again, it might not be a problem, but I won't know until mounting it and setting it up.
My main concern is the truss rod. There's very little play in it either way, so how straight the neck is under tension will be key. If it only needs tiny adjustments it should be fine.
So, looks great, I can't believe it's bound at this price, but the jury is still out until I can get it on the guitar and try to set it up properly.
And how it is currently, with the headstock painted and decal applied, waiting for the clear coats.
