Miscellany

FTPS is available in the currently released software and is therefore available to GNB under their current license.  SFTP won’t be released until the next level.  Unisys has a early release version available but it is only provided as a CER (Custom Engineering Request).  It’s not covered by GNB’s current license so there would be an additional fee to run it. 

The short answer is that FTPS is considerably cheaper