It would work to a degree, but probably not the best fit unless you did some modding as the chill pill is a broader arc than the arc of the v brake arm. I'd think it could pop out quite easily.
Also an expensive way to mangle a chill pill.
Maybe find another cable hanger and play with filing the shape to fit?
Thank you!!!!!!!I'd want something that sat fully across the canti and couldn't pop off. solderless cable nipples look to be your friend:
https://www.venhill.co.uk/cables-an...mp-components/nipples/solderless-nipples.html
Or Odyssey do some BMX ones:
https://www.sourcebmx.com/products/...V0ZRoCR2XwgQ9EAQYASABEgKG7vD_BwE&gclsrc=aw.ds
Some there that will look (marginally) less sh1t than the "knarp" you have.