Performance and bugs might still be a problem with these relatively young projects. But if all you need is a browser I do believe it might be worth a shot.
In the EU 2FA for banking is required by law which usually comes down to either an Android/iOS app or a chipTAN device. That’s why browser isn’t an option for me. Sadly I don’t think waydroid passes the basicIntegrity check of AOSP [1], so emulation is out of the picture too.