There was a writeup on Toucan in the May 2010 issue of Computeractive (magazine) on page 46 by Sean Parker. It was entitled "Toucan: Keep USB memory key files safe".
The article is online in video tutorial format (mostly reading from the printed article). The online version is entitled "Protect a folder with Toucan".
The website has another writeup in the form of a download recommendation dated June 2, 2010 by Tim Smith and Computeractive.
A portable program for synchronising, backing up and encrypting files and folders
They also provide a direct link to the PortableApps Toucan download page at:
It is interesting that Computeractive is geared toward computer novices but Toucan is billed here as being for "advanced users".