One other problem is that boot-from-usb is usually not enabled by default so you have to fiddle with bios boot order every time.
No, leave the normal boot order as-is. To boot from the USB, just hit the 'boot-menu' key on boot-up. The 'boot-menu' key varies according to brand of computer. In a Lenovo, it's F12, in an ASUS, IIRC, it's ESC. Just select the correct boot-device and away you go. It's the same method as when you install the OS on the computer from a USB.)
"The 'boot-menu' key varies according to brand of computer."
Right I have a hard time remembering the bios keys, let alone the boot menu ones too, but yes this is better on foreign machines, and if you can't or don't want to permanently set the boot order.
For what it's worth, I often put a tiny sticker on the bottom of the monitor that just gives the two keys for getting into the BIOS menu and the Boot menu. It doesn't need to remain there for long till it soaks in. Then again, some brands of machines will display a prompt at boot time with those keys, if the BIOS setting is enabled (Lenovo, etc).
No, leave the normal boot order as-is. To boot from the USB, just hit the 'boot-menu' key on boot-up. The 'boot-menu' key varies according to brand of computer. In a Lenovo, it's F12, in an ASUS, IIRC, it's ESC. Just select the correct boot-device and away you go. It's the same method as when you install the OS on the computer from a USB.)