I would like to keep elementary OS on a USB 3.0 drive, to use a private OS on a business laptop . I'll use the OS for office apps (probably Libre), FreeCad and some IDEs including subversion clients. The required data should be stored on the USB as well. The laptop this should run with is a T430 with nVidia NVS5400m (important for FreeCad).
Do I have to expect any lack of stability or system performance, compared to booting from an internal drive (beside the slower writing/reading speed from the usb-hub compared to an internal SSD)? And is there any possibility that the company recognizes this?