Outlook
About that price: the HP Sprout's $1,899 price tag is a hefty one to swallow. You could buy a very capable Windows 8 desktop all-in-one, with touch, for $1,000. Or you could buy an iMac and a good iPad and still pay less than this.
The Sprout is an attempt by HP to show how new interfaces could be used in PCs, and how scanners could be integrated in clever new ways. Immersive computing will be a platform for HP, extending from consumer to small business to commercial: but Sprout is the first product in that chain. As a future front-end design for 3D printers, Sprout could be what a design studio resembles in a few years. But handheld 3D scanners cost less than this, and for many Windows users who are creatively curious, there's no reason they couldn't achieve something similar enough with their own hardware and accessories.
The Sprout's clever scanner/projector arm isn't an accessory, sadly, it's part of the PC itself. That seems like its greatest weakness. As a separate, more affordable peripheral for desktop PCs, it might make more sense.