special feature "Allow SCP fallback"§

I work for a industrial control also with the SFTP over SSH for made the connection.
So far - so well.
Unfortunately, i have to use WinSCP, because he has a special option like "allow SCP fallback" - so that means, if I have this deactivated, no chance to take a connection.
Are there somebody who knows what are this? And it would be a big task for implement this "shit-option" also in this tool, like smartftp? So then I could work after then with only one (!) tool for everything!
Have a look.
chris from switzerland

There are no plans to add support for a proprietary/undocumented legacy protocol like SCP. I'm surprised that is still being used?