XRP offers faster & cheaper cross border transactions compared to the SWIFT system but it faces significant regulatory & adoption challenges.
So do many other coins.
Main difference is that swift can be used to get a transfer back.
irreversible means nothing if both financial institutions trusts each other because they can just send it back if things goes wrong, I think these big financial institutions will eventually find a big road block towards increase in efficiency and will ditch SWIFT eventually and try out XRP instead.
as always, the nature always prefer things to be effective and fast so does these big financial institutions they gotta need to pump that number up and SWIFT will be seen as the thing that pull them back.