For those interested in an alternative to Sigma Photo Pro, I just received this message in response to an inquiry. Please note that Irridient already provides support for the SD1.
"The DP1/DP2 Merrill models will both be supported in the next update which should be out soon (weeks).
|Blue and yellow in water by fireplace33|
from Ink and water
|Kylmä joki kopio by Kaappo|
from Shutter speed 1/25 or slower
|WR_2.8_13 copy copy by photoprof|