The Underside photo shows how the volume was hollowed out to minimise the the amount of material used. The majority for the part was only 2mm thick but this certainly seams to be strong enough.
This shows the area that I would most like the technology to improve in. On this subtle surface it is very clear to see the layers from the printer. I was prepared for this and in all fairness Shapeways does make it very clear that this is something that will happen. I'm hoping that for the next pieces I'll upload the model at an angle more sympathetic with the strata and possibly eliminate it from the final print.
I'm also now very keen to try out some of the other materials that they have on offer.