@chrismb: Yes. That's what this thread is about after all.
- martin
Open sftp://username:password@sftphost.com/ -hostkey="ssh-rsa 1024 blah blah" -PrivateKey="C:\Temp\Test.ppk" -passphrase="supersecurepassword" -rawsettings AuthKI=1
Server offered these authentication methods: publickey
Offered public key
Offer of public key accepted
Authenticating with public key "rsa-key-XXXXX"
Prompt (passphrase, "SSH key passphrase", <no instructions>, "Passphrase for key "rsa-key-XXXXX": ")
Using configured passphrase.
Sent public key signature
Further authentication required
Further authentication required
Server offered these authentication methods: password
Prompt (password, "SSH password", <no instructions>, "&Password: ")
Using stored password.
Sent password
Access granted
Opened main channel