Not yet, I have some. I plan to try and transfer my Tmax times to it. The Tmax is free for me most of the year, the Rodinal is not (but it takes soooooo little of it, it is the most economical stuff I could probably use).
It might allow less development times because of the contrast Rodinal tends to produce, and there for keep shadows and highlights better. But it could hard to keep it under.