Having spent the past two days exploring the potential of the used first-generation HoverBar Duo I somehow managed to acquire for $35, I would emphasize "enough" here as a qualifier at least once over.

Though the following is pure speculation, there were a few highly observable clues to suggest that the previous owner also had a heavy iPad Pro (perhaps a 13,9 as I have,) though - after over-tightening all the adjustment screws (all but stripping threads in the case of the one at the base,) they were ultimately not satisfied with the Duo's management of the weight, even tightened to that state.

(Again, entirely speculative but.)