And the elements wont be burning on space either until you get a melt going. I know electric water heater elements dont last if there is no water in the tank, so an inexpensive Lee bottom pour pot left 3/4 full has been working for me for over 25yrs.
I, too, use two pots, since I tend to use only Soft Lead and the 'Garagolly' (W-Wt with a little tin).