LOL. You didn't mention having a SCSI controller, you just said you "have a noisy 3GB drive you'd like to replace".
eem.. yes, i actually did... read the post again. i wrote SCSI with small letters...

I have a noisy 3 gig scsi drive in my a1200.
if i could replace it with a SD adapter and expand the drive to 4 gig. or even add several such adapters. id be a happy man...
my girlfriend would get a new life... 
But now we are hijacking the tread from the OP...
looking at the adapter, and reading data about it.
i see no real issue with the adapter not working in any scsi controller.
and besides. the dev of it seems to work quite hard on updating the firmware.
As soon as the money check bounces into my account. I'm ordering one, or eve two...