Metal Wires or Regular For 3PDT?

[Steve Mavronis]

As I'm now building myself a spare copy each of the two DIY pedal clones I've built (both PCB's are done, wiring the 1590B guts today), I'm wondering why I was using metal wires for both the bypass and PCB input grounding paths - probably because I see pics of some others doing the same. So I'm thinking about just using regular insulated 22 gauge wire, black and purple respecively, for both of these 3PDT paths to simplify things because bending metal wires to exactly fit is tedious and time consuming. My only concern is the bottom bypass wire next to the 9V battery that rests against the 3PDT body at the bottom of the pedal. On my previous builds I insulated the metal wire there with clear shrink tubing so using a regular insulated wire instead does the same thing. But do you think there would be any danger of pulling a flexible wire there loose when changing the battery, unless I have it pulled tighter to be a little closer to the lugs?

Look at this graphic for reference:

(Illustration from Gaussmarkov's article Wiring Up a 1590B)
http://gaussmarkov.net/wordpress/thoughts/wiring-up-a-1590b