That exact technique? Not in the least - it relies on indium/gallium/tin/whatever alloys that are liquid at room temperature and immediately form thick oxide sk

That exact technique? Not in the least - it relies on indium/gallium/tin/whatever alloys that are liquid at room temperature and immediately form thick oxide skins on contact with air. Even when solidified, they'll have mechanical properties resembling wet toilet paper! SLS/DMLS, however, can give quite a bit of control over the grain structure. The solidification rate of the melt-pool is generally very rapid, giving small and homogeneous grain structure, but there can be all sorts of problems with residual stresses in the part.