I can confirm that thise are working. If it’s counted that /e/ OS V1 even dev-build with ih8sn makes banking apps work, then I can say that folllowing apps for finnish banks are working:
OP-mobiili (fi.op.android.opmobiili)
Pivo (fi.op.android.lompsa)
S-mobiili (fi.spankki)
MobilePay (fi.danskebank.mobilepay)
First 3 requires ih8sn which apparently comes as part of stable build, but can be installed to dev-builds too, like I did. Last one, MobilePay worked also without ih8sn.