So I decided to try out Devuan Beowulf this weekend and got it installed no issues did run into a few minor issues but I was able to work through them. 
So I added the following to my sources list:
deb http://mirror.ppa.trinitydesktop.org/trinity-sb beowulf deps-r14 main-r14
Which I believe is correct if not let me know as I know there is no stable and I have had good luck with the preliminary stable branch.
I do an apt-get update and I get the following:
 Conflicting distribution: http://mirror.ppa.trinitydesktop.org/trinity-sb beowulf InRelease (expected beowulf but got buster)
Not sure why I am getting it. It looks like I could still do the install as a search shows all the packages but I am not sure if I should or not. I am in XFCE right now but would prefer Trinity.