Thought I wouldn’t have to cut anything but you might be right
It will be irreversible, because the dogear covers extend well beyond the footprint of the original pickups.
Antiquities are fine, but I don't think of them as especially distinctive -- so I'd be inclined to try something less invasive. You might look at the range of pickups TV Jones does in English mount (everything from his T-90 to a Dyna, to Magna-trons). These will likely fit inside your existing pickup rings (might require a little judicious filing), which means they can be reversed without a trace.
Or, do a top mount (which looks great), which is only a little more invasive/destructive.
The existing pots are probably 500k, and should be fine.