Of course the second technique needs a fancier microscope that is likely more expensive and requires more technical ability. But CLARITY requires an objective with a very long working distance. I'm no expert in optics, but I'm pretty sure this results in a significant decrease in numerical aperture and therefore resolution.
It seems as though the other method is simply better than CLARITY, and that a lab serious about doing whole brain imaging could afford to invest in a setup similar to the one described. Yet this technique received none of hype that was bestowed on CLARITY. Am I missing something?