I tried it in January and it works. I think the script gives you choices of different groups of packages to install, and I think I either chose not to install all of them or could not install some of them. There's a list of missing packages in my work directory, but I don't recall why they are missing.

Using the instructions on this page, I only slightly deviated from these instructions.

To keep it short and sweet, I -
- updated the kali install, added devuan's sources in sources.list, commented out the kali sources

(will get errors, do not reboot)

This is the extra step not noted on the link above.  sysvinit-core did not get pulled in

- alter /etc/network/interfaces to rename en0ps (??) to eth0

- check with command

Returns nothing, so sysd here.

I downloaded the kali virtualbox file and will try this out on it now.  Will report back.

Edit:
While the netinstall.iso worked, the full kali install did not.  At least I got a dead end.  Now I see above why the recommendation above was to start at ceres and see what broke. 
A current kali to beowulf migration was not successful in large part because kali uses a newer version of dbus.  An attempt to use ceres or chimaera may be more successful.

And trying to downgrade dbus to devuan's version resulted in 934mb of packages to be removed.  Oh well, it was fun trying.

I'm reading on your site about migrating from debian to devuan.
https://devuan.org/os/install

I am running kali currently :  uname -a output
Linux kali 5.3.0-kali2-amd64 #1 SMP Debian 5.3.9-3kali1 (2019-11-20) x86_64 GNU/Linux

what would be (if any) a recommendation to migrate from kali to devuan?

Why not try it the other way around, install devuan ceres (unstable) and edit in kali repos and see what breaks first?

I am running kali currently :  uname -a output
Linux kali 5.3.0-kali2-amd64 #1 SMP Debian 5.3.9-3kali1 (2019-11-20) x86_64 GNU/Linux

what would be (if any) a recommendation to migrate from kali to devuan?