The proof is in the pudding, as they say, so dyeing roving is only successful if yarn can be spun from said roving!
And so I took the roving I dyed in my first and second dyeing sessions and set about spinning it. I was able to gently pull the roving to unchain the finger chains I made before dyeing.

Single ply on the bobbin
And it spun up into a colorful single. I just spun one chain after the other until all were done. On the right end of the bobbin is the chain that had the mixed dyed on the underside, resulting in brown dyed roving. But once spun, it just appears as a darker version of the colors. I think I prefer it to the lighter colored yarn.

Singles in a ball
I then wound the single ply into a ball to ply it from the center pull ball.

2-ply yarn
If I were a better spinner and had spun a much finer single, it would have been fun to see this navaho-plied. But even as a traditional 2-ply yarn, I rather like it.

Skein of yarn
The resulting yarn is very squishy and so far I’ve just been petting it and holding it. I think I will keep it to show the dyeing results.
I gave a chain to Mary of Spinning Magic so she could spin it on a spindle.

Singles
Here is her single ply yarn on her Turkish Spindle.

Plyed
And Mary’s after plying.

Finished yarn
This is the finished yarn spun on a spindle. I have not seen this yarn in person yet, but it looks to have spun up with ease too.
I’m so happy with my dyeing attempts and the resulting yarn. I’m looking forward to spending some quality time with my roaster and dyeing more roving!