I use a separate supply for my VT1EQ. I [i]can[/i] run it daisy chained from my one spot (with an inverter), but that's only 9v. The only time I've had 'buzz' issues was with a digital pedal (EHX Freeze), so I used the 9v feed from a Boss TU3 and that sorted it; must be them magic buffers...
I find that old style 'transformer' supplies are cleaner than newer 'switch mode' ones, but that's just me.