One thing bothers me, maybe paranoid
I watched this youtube video...
https://www.youtube.com/watch?v=2qmOM567BF4Great it works but he then said he could now spend those btc or send them right from there after plugging in the stick, connecting to the net on any computer of course... my question is, am I vulnerable during that time my stick is in and I am online with the wallet open? Also if multibit or any usb download wallet goes belly up and off line am I affected at all?
Start watching from 9 minutes roughly to see.
Also on a side note, if I had the chance to buy a USB cold wallet ( the btc it contains that is) it is best to get the coin sent to my own wallet cold wallet (USB btc address), correct, never buy the stick because the seller could have multiple copies, correct? Friend or not, better safe than sorry I guess.