Well... USB sticks can be very large too. 16GB is common now. So, then 15,999 (rounded) will get lost in the process... :S
I know there are other utlities/methods, which don't require a partition of just 1,44MB... Just can't remember where/how i did that .

And, flashdrive or USB-drive - i don't know why there should be any difference when using modern tools... It's just a different drive letter. Technically, it shouldn't be a problem - by far, most PC's can boot now, from ANY USB-device.
Well, i think i just have to continue my search - i KNOW it exists .