There is that, granted. TMX and TMY are pretty good WRT reciprocity failure too but they're not Acros. I think the suggestion that TMY is slower than TMX in long exposures has been refuted, at least until they get VERY long. TMY-2 might actually lead to shorter exposures than Acros though I'm far from sure of that, and that doesn't address the need to figure the compensation nor the impact on contrast.