I love the look of the samples posted on the op's website, but the painful part is that I don't love spending $80 w/ shipping to get a few rolls, especially when I can try 1 roll of film at some place like Freestyle for $20 shipped (Foma).
To me, trying out a new film involves only a roll or two. With 2 rolls I can do half the negs in one developer, and the other half in a different developer. The second roll can be shot at different EI's, etc. That's all I need to figure a film out, because logically, if it isn't working w/ 4 different samples it isn't ever going to work.
I'd be tempted to try this, but not at the cost that's required to try an unknown film.