You can. With a finished style like those I shared, you could just apply them to an image and then save a new style excluding the AgX module.
dtsolve has words in the README on the approach of making styles, which should explain the procedure. Basically, with dtsolve, the approach is to first solve the tone curve (using a monochrome reference image) and then solve the colour modifications (using a colourful reference image or even a test chart shot) while keeping the tone curve fixed. That leads to faster convergence and since the two are mostly orthogonal, it works out nicely.
There’s currently no way to then exclude the tone curve from the final dtstyle, but that can easily be done with a text editor or with a small code change.