No, WinSCP cannot do that.
I was afraid of that.
You are actually not looking for an FTP client.
All you need is to open TCP connection to the FTP server and feed the commands yourself.
Well, not quite. If I could remember how to handle the data connection in both active and passive modes, remember which display commands use the data connection, want to handle the retrieval and storage of data for data transfers (if I get that far in this test), then yes, I could do it all myself. But I know my capabilities. I need an FTP client - a dumb one, but a client non the less.
Thought, if it helps, there's an FTP client that mimics the Windows
ftp.exe, but supports the passive mode:
<invalid hyperlink removed by admin>
Thanks. I'll look into that.