The chemical composition (or curing, whichever is the proper term) of older Sako pads varied considerably. Some went "mushy" while others turned to gravel. If you're lucky, you got one that was "just right" . With these "just right" pads, no amount of compression will deform them. If you have a "mushy" pad, it is likely already deformed. So, while storing Sakos on their muzzles or horizontally might make you feel good, I don't think it is going to influence the life of the pad.
An exception might be one you obtain NIB which has never stood on its pad. Storing it without pressure on the pad might extend its life if it is one of the mushy ones.
An exception might be one you obtain NIB which has never stood on its pad. Storing it without pressure on the pad might extend its life if it is one of the mushy ones.