Yes it can be done. If I find a time for that... :-)
Why not let local side of WinSCP browse for a network neighbourhood share rather than having to create a network drive to that share and then access local files on another machine via that?
Currently I have to create say a Z: drive to a network neighbourhood share to let me access files on another machine not using winscp to upload files to a remote machine.
The other machine I point Z: to is a Linux box running Samba, not Windows.