Amal is better to answer you question officially,
But here are my thoughts.
Do you have the Paywear yet?
If so can you scan with TagInfo and post the capacitance.
if compatiable it may be viable for a narrow custom job
I had an ASB (NZ) one converted.
I will likely get a WestPac one next.
We have this style, which is very similar to my ASB one.
My conversion looked like this
installed with custom needle
You can read about my experience here
Alternatively, have a look at what your banks have to offer, if possible, The Fob style I believe are the easiest for the conversion process.
Something that looks like this
but my sticker type was also easy when done with the correct technique
Commonwealth Bank have this
@fraggersparks do you have any conversion information for other Aussie banks