Originally Posted by
colnago62
I believe this is true. It is one the reasons that some top pro riders are resistant to riding disc wheels; Compatibility with neutral support wheels. My understanding is that the disc position can be different enough to drag or not fit all together.
Non-issue for non-racers. If one set of wheels has a slightly different disc position, you can shim them so that no adjustment is necessary upon swapping - it's a one-time job that's very simple. If you can't be bothered to shim, you can take an extra 20 seconds, per wheel, per swap, to wedge the calipers apart to give them enough room to center on their own.
Contrast that with the salesman, who seems to be suggesting a major hassle or downright incompatibility with other wheels - it's BS.