Are the bushings interchangable in the mount, so you can swap them when you feel the need?
^^^This.
And if so, is a press necessary to accomplish that?
update on bushing swaps and the mount materials
first off the mount is 7075 aluminum, 304 stainless cut washers, 304 stainless hardware will be included
the body is anodized and lazer engraved
the bushings are high grade polyurethane
now to answer your bushing swap questions
they CAN be swapped - it's not "easy" but if you know what you are doing and have the right tools, it can be done.
There will be a version 1 kit that will be the bushing durometer you order
There will also be a version 2 kit that will allow you to order the mount with your first choice of bushing durometer installed + an extra bushing set in another durometer for future changes if desired
good news ........right?????