Test leads and clamp measurement?

[bitwelder]

The instructions of the Uni-T UT210E (small current clamp meter with leads to measure voltage/resistance) warn in the AC/DC current measurement section:

When measure current, unplug test pen to avoid electric shock.

I get that the accidental contact with the test leads may disturb the current clamp measurement, but is there really a risk of electric shock if somebody touches them?
What are the voltage levels induced in the instrument while using the clamp?

(Nevertheless, it IS a good idea to remove the leads anyway when they are not used)