In short:
If the USB stick only be used for storing data - and this one might possibly also encrypt, then the stick is certainly a very good choice.
Since I had, however, provided a different use for the stick (Boot Device with complete Linux image), this refers to the extended Rezesion uses. Therefore, the stick from me gets an "It's OK".
The JetFlash 620 comes with a separate partition, which can be used for storing encrypted data. The software for this is also on the stick.
Great thing - really.
Now you may (depending on the desired application of the USB stick) a problem:
This partition is always found as the first partition / hooked.
If the BIOS so the boot from USB stick to while acknowledging, however, does not allow a choice of to boot partition, then does not work the USB boot policy. In any case I can not write a boot loader for Linux. Did not see not time-consuming attempts (possibly second partition with bootloader, etc.). The return was less time consuming ...
So far, it is probably in any case anyone managed to delete this partition.
Therefore, my conclusion - to avoid much craft effort:
To use the USB stick as boot media or the use of a plug device (eg Seagate Dockstar) for storing a Linux system and direct boot from the stick that is not suitable!
Here you can on the model in black recourse (JetFlash 600).
The JetFlash 600 has no built-in encryption software with sep. Partition and works flawlessly as USB boot media.