Can some clamp meters measure voltage through their clamp?
Not with your kit but Fluke has just released a non-contact voltage meter with a U shaped probe (not quite a clamp). It believe it works by capacatively sensing the voltage, where the conductor forms one half, and the user forms the other half of the capacitor by touching a metal plate on the back of the meter. Reviews are mixed. Check it out: Fluke T6-1000