but if you asking me did i ever bring to oversea, the answer is no. I prefer bring extra memory card, cos it lite and small and with now a days the size so big, i usually did not finish using all the cards' space when trip end.
Well.. I think nowadays the purpose of such device is not just for clearing up space on your memory card but also to keep a backup copy of the photos captured during a trip or event. Imagine if you come back to find that your memory card has some problem and the precious pictures taken goes down the drain. It could be a once in a lifetime trip and might not have chance to go back to the same place again.
For me, I've always traveled with my laptop so I backup my pictures whenever I return to the hotel. Such device would be a lot lighter than carrying a laptop. I'm also seriously considering one such device in the near future. Either this or a netbook..
On a mid to long trip, yes very useful if you don't particularly like to bring along a notebook. You can just offload your pictures to the device during your shooting break, don't even need to wait to wait till the end of the day to get back to your hotel or lodging.
I will not bring neither both. First for the reason "spoil while transportation" , next will be "missing item". Bring more memory card, which is cheaper now a days and they are consider much stable. Hardly any screw up for me. I usually will spread my pics to many cards rather then place it in a single card. but of course, tats my way.
i have a vosonic that i use out of the random fear that i might lose my equipment while out and about. so the vosonic stays back in lodging area, while i go around and shoot, at night i will transfer the files to the device, and it stays back in the hotel/hostel.
also useful to look at files at night on something larger than a lcd screen if you are *that* bored. i also use it to hold random videos just in case there is no tv back at lodging place; or if there is tv the programmes are horrible. can pass the time..
of course my vosonic is slightly different from the device you have, it has a screen, so it can double up as a media player.
i bring along my laptop too for trips to backup at the end of eveyday. was considering a netbook too, but if such device could save me more than $200 and more space without the need of OS booting up, not to mention using AA battery, i would consider it. but this is new to me so asking the experience of bro who used them before.