To round this thread off I managed to picked up a D-Blue from an AD a few weeks ago and I'm really happy with it. You need some good light to show the dial in it's full glory but I'm thrilled with it.
I've spent the last few weeks alternating with the SD43 and feel they are different enough and actually compliment eachother well.
Thank you all for the advice and encouragement. I always thought people were kidding themselves when talking about how well the DSSD manages it's weight and that you don't notice the size. Now I'm one of them!