it works under Lion 10.7.2

, with some minor flaws,
unzip VoodooSDHC_32or64.kext.zip, install it with KextBeast, then run Kext Utility to refresh system cache.
some minor issues are observed:
Booting Lion with SD card inserted, I saw 2 mounted volumes of SD card

. ejecting only one volume might crash OS. better to eject them all.
Sometime, it might slow down shutdown process with SD inside card reader (booting seems OK).
I tested 150x 4GB SD card and 133x 4GB SDHC, Class-6 16GB SDHC -- 3 cards
All work, I put AVCHD MTS video files on SD card, play it with VLC or Roxio Video Palyer, speed is acceptable! (some frames dropped, but OK, both cores of my T8300 went 98%, MTS file needs heavy decompression for every video frame during playback)

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X61 T8300 8GB RAM 64GB Kingston SSD Lion 10.7.2
X61T L7500 4GB RAM 40GB Intel SSD Lion 10.7.2
Dell Mini9 2GB RAM 16GB SSD Snow Leopard 10.6.8
X200 P8600 8GB 64GB Corsair SSD Windows 7 Enterprise 64bit
GA-P55-USB3 Intel i5 750 16GB RAM Lion/Snow Leopard Server/Windows 7