The result is frankly disappointing transfer speeds. Use this USB drive as TrueCrypt encrypted drive for its Linux bootable or for portable applications fall under pure suicide ... eg 20 to 30 seconds to launch Firefox Portable ...
If, against this is to store the data ocasionnelles as DVD movies or some Office documents, the key is OK.
To add to this defect that the key is very large: it blocks access to a second USB port if it is adjacent.
The cap is easily lost.
In the end I am very disappointed with this USB key that I rather compares to an old floppy disk or CD-ROM a hard drive.
If your priority is speed rather take a 5400Tm external hard drive of any brand. If your wish is more focused on the temporary storage mélé to frequent traveling, the key is for you.