Also, most warranties will be voided if you let the humidity inside the room where the piano resides vary so dramatically. Any way to keep the humidity in the cabin constant?
If you are like me, you smiled when you saw the posts about people being comfortable at certain %. Bogus. We humans are very sturdy and don't swell when it's humid nor dry out when it is dry. Pianos, having lots of open wood, are entirely different.
Note that the damp chaser does little for the action and the keybed, and mostly protects only the soundboard. There is great debate about its effectiveness. I have one on my piano but do not rely on it, but rather have a humidity clock, two humidifiers and two dehumidifiers in the room where the piano lives to keep the humidity around 40%.
For reference, in reality there is no much problem in keeping the piano dry, if you can avoid the piano getting wet. I have heard that Steinway keeps its pianos at about 30% all year round (I heard that from a very reputable New York seller who deals only on old Steinways and some other fine brands, but sells no new Steinways, so it may be puffery. Anyone knows?)
Also, note temperature affects the piano very little. If you don't heat up the cabin that much, there is no reason why it should get so dry.
Digital has no such problem.