You should do Colemak. But since you asked on a Colemak forum, you'd expect that answer anyway, right?
However, I feel it's a simple enough choice. Workman brags a _lot_ about itself but it's made with a poor understanding of layout design. For instance, it has a way too high same-finger bigram rate. As you point out, too, it doesn't have a lot of support.
I feel that many users get bamboozled into using Workman by its aggressive self-propaganda, and it's a sad thing since it is at heart a poorly constructed layout.
If you want to listen in on layout comparisons in general, join the Alt Keyboard Layout Discord server. They'll likely say about the same thing as I did above.
( Θώθ) ～( Shai Coleman's own account of Colemak's design: )