well, if you look at precision temperature or resistance measurement, you often want a bipolar measurement to eliminate thermal emf errrors.
One way to do this, is to use a square wave, problem is it rings. SO, bob peace invented a way of doing it with a trapazoidal wave, to eliminate overshoot from ringing. It means heavy slew rate limiting, or soft start.
Considering how well built that sensor is, its not a bad idea to make such a circuit for it.
You can of course use a square wave, but it requires either tuning (to eliminate overshoot, so you have to check when the wiring is changed) or a dead zone where measurements are not taken (as measuring the overshoot will incur error). Using a trapezoidal stimulus is a elegant solution to this problem.
By deadzone I mean a circuit (or MCU program) that will wait x time before recording values after a polarity shift is made and to stop measuring y time before a polarity shift is made. With a trapazoid you can trigger measurements on the correct level being reached in a analog way, I think, for instance feed the signal into a comparator that turns on some logic gates that triggers an oscillator on CONV for a waiting MCU. This way impedance changes dont require programming changes.
I would need to think about this more.
I however doubt there will be mechanical stresses on part of any ringing that are significant, I don't believe you can damage it this way, so its purely for measurement ease/low power circuits/etc.