TIL
Devuan uses a compat library to provide libsystemd, so they can use Debian packages as is, without recompiling everything.
Every Debian package that linked to libsystemd, will run on Devuan with libelogind.
Filesize: 1209656 libsystemd.so.0.44.0 (Debian)
Filesize: 1085336 libelogind.so.0.40.0 (Devuan)
I think you won't encounter any problem in most cases, but the real gain is extremely small.
If you use #Devuan with sysvinit or openrc, I'd say just use #Debian instead, since Debian also support those two init systems.