Having developed interconnects I think that directionality is of minimal importance when the cables are made, the shielding grounding point is a good one and it is supported by the physics professor that aided me in developing the Argento interconnect. I do not use a grounded shield, I actually use a floating shield because I am aprehensive about using a grounded shield due to the increase in capacitance and inductance that a grounded shield will introduce. Our floating shield extends over the RCA connectors but is separated by heat shrink.
When it comes to the belief that something changes I also disagree but do so respectfully. Static electricity is what changes. The static charge that is held by the dielectrics is what the "break in" is all about. My cables just like all others take time to break in because they need to dissapate their static electricity. Flexing and bending and shipping them do build up static electricty. Leaving them be once connected is the quickest way to break them in. Thankfully the Argento is a flexible but shape maintaining cable, meaning you bend it but it stays in that shape so it takes less time to break in because it doesnt wiggle around like worms near vinegar every time you listen to music.
The belief that the silver or copper "changes" is crap too, how does a metal change when you are only putting a few volts through it. Please explain that to me with some proof. What I really like is the so called Cable cooker that I have seen for sale on the net. It supposedly breaks in cables. Right but when you disconnect your cables they need breaking in again. Intelligent very intelligent, thats like washing your car in the middle of a S#1% storm. It is a good idea, but it just doesnt work in reality.