The beauty of winscp on a Windows PC is you can access all areas of the NIT's file structure from the PC and you can do it securely. This then enables you to copy files from the NIT to review on the PC and then pass updated copies back to the NIT. well at least that is my current limited usage understanding.

Working on the NIT's small screen can get very tiring over long periods so having the option to work wirelessly and directly with the NIT (via differing methods) from any PC on your network is a great advantage.