Well, Stower, if my cut-box is too fiddly for you, I'd suggest buying a pedal graphic.

Danelectro is cheap (if you can still find one), or the Boss is bombproof (though a bit more expensive).

They both have a master volume, so you can leave the rest of the faders at unity, and set the master to cut or boost when you stomp on the switch.

I use one alongside the box I described above to pre-eq some of my instruments, and have used it on its own in the manner I'm suggesting on occasions too.

The advantage of the graphic over the cut-box is that when you're doing lead lines, you can boost the middle a bit, or if you're using the graphic to cut the signal (safer), you can have your lead volume eq'd flat, and put a bit of a smile on your rhythm setting instead.

I've been using this system for decades - right back to when I used to play acoustic guitar lead parts over the (very loud) Pearl Divers.