I'm still after a way to be notified of invoice payment via webhooks where the invoice was paid via bank transfer. Having webhooks containing bank data might help me create a workaround to the lack of a full payment notification webhook.
So I'd add tenuous support for this!
Ultimately I'd say it's a banks job to provide an api/webhooks for bank data (which I wish they'd get on with). If you implement a feed of bank data via QF it feels more like the kind of functionality offered by messaging applications like BizTalk.