I have since done this several times with 3 different tobaccos.
To me, all of them are better cubed than rubbed out loose.
I have had great success by ensuring that my tobacco is sufficiently dry, that the cubes are cut very finely with sharp scissors, that they are packed "properly" via gravity without too much tamping, and that I proceeded with a very thorough charring light followed by a very thorough true light.
If I meet all of those conditions, the results are almost uniformly excellent, whereas my experience with rubbing out flakes was very inconsistent and much less pleasurable on the whole...
If you want a long smoke, then cube cuts are the way to go. I have surpassed the 1.5 hour mark when normally I only have short sessions. In my experience, the density of the cubes can be far greater than the loose cut tobacco without compromising the integrity of the smoke. When they finally ignite, they burn better than any other form of tobacco that I have seen (providing that your moisture level is appropriate) and they provide a fuller volume of smoke and a richer flavour WITH LESS EFFORT than rubbing out the tobacco will give you...
With other methods, YMMV, but cube cuts are virtually foolproof in my eyes.