Hi @alphason , welcome to the Forum.
Your entry post has a history of discussion within this Forums Analog Section, in relation to the Viv Rigid Float Arm, research will show the Geometry was regularly commented on. The Standalone design for the Arm has also been commented on.
It is good to learn of it being a device that has evolved in the good impression it has made on you.
In relation to a Standalone Pod Tonearm Support, I hear one in use regular, with a 12" TA mounted on it. I have not at any time found a reason to suggest the method has a fault.
In relation to the Geometry the Viv is responsible for the seed being planted and the experiencing a underhung set up is one in the pipeline.