I can speak to the DaVinci; I must say, I think their Gingerbread flavour is mild and the spice flavours just don't come through very strongly, and the molasses flavour is just not a strong note in there. I stick to the 'pumpkin pie spice blend' for those flavours when I need them.

On the other hand, their new Spice Blend flavour has considerably more spiciness and character, and would be more useful though still the flavour would need boosting unless you used a tremendous lot. Of course, a little tiny bit of real molasses works well to do that boosting. I have an ancient carton the the blackstrap, it seems to keep forever and a very small amount does a tremendous job.

Although, I just have to try the coffee sub (roasted chicory root usually) with coffee and cocoa combo, that sounds like fun and a cool experiment!