Sam L
Headphoneus Supremus
I've never tried, the stock cable has ear hooks that don't make it easy to wear the cable straight down.
The IER-Z1R is definitely on the heavy side, much more so than any other IEM I've tried. That said, I do manage to get them inserted pretty deep into my ear canals, so it could be possible to use a cable that hangs straight down.
Curious, why would you want to do this instead of the 'standard' way of hooking the cable over your ears?
On some of my iems, I wear them with third party cables, straight down. I tend to prefer this when I'm frequently taking one ear in and out alot. But I also will just let the iem hang off my ear on some iems as well. Just depends on what kind of comfort I get. and then there are some iems where the hooks get in the way of my glasses. so much variability in comfort.