I wrote to the Curator of the weyerhauser bonsai collection to get his input on the use of both stands in a display. Thought it was important to share, rather than keep to myself....
Re: the stands, that is a nice, classic design. Regarding using them together, a basic tenet of good traditional display is economy of expression - to not repeat elements - so as an example, we don’t put a trident maple secondary bonsai with a trident maple primary bonsai, or artwork depicting trees in a display with a bonsai, or have a companion plant of chrysanthemums with a scroll image of chrysanthemums. Regarding pots, the usual practice is to not duplicate the shape or color of the bonsai pot in the shape or color of the companion plant’s pot (not round with round, for instance, or blue with blue). Using these two stands together would ensure numerous duplications – both are the exact shape, same design, and both formal (with legs) rather than one formal and one informal – and since they are both round stands, it implies that both pots would be round as well – and probably both formal pots (with feet) since both stands are formal. One can always say “I know about that, and I am doing this by choice”, but then that choice should be well-reasoned, with an expectation that it helps communicate the basic theme of the display. I hope that helps.