I'm currently using the AGK T-bar, with a spacer for running DIN, NOS, etc. It works well, but to get the configurations right (or close to it), the weight of the mics + shocks is in front of the stand. That sets the balance of the stand off, which could be an issue if I were running very high (which I never do).
I'm assuming the Shure vert bar allows SD mics to be more centered over the mic stand, when run in these configs, correct? If so, I may have to trade out one day.