Uprights seem to have outsold grands by a large margin.
Later, Walter Lane opted to use the Farrand-Cecilian action which, while it was doubtless excellent, is a very difficult restoration today. If this was not the tightest player action built in the US it must certainly run a close second. The only rubber tubing is from the finger buttons to the accessory pneumatics, and a short length of hose from each end of the pump to a manifold on each end of the stack. The point being that there's very little opportunity for leakage. Every separable joint is gasketed.