The surgeon I was working with the other day had one on loan / trial from the rep and we were both having fun "playing" with it during a case. It syncs to your phone via bluetooth. The app was nice, worked seamlessly. Apparently it can upload scans to PACS. Resolution, both temporal and spatial, were subjectively pretty comparable to the usual sonosite. Color and doppler looked normal. The main issue I saw immediately were that the beam width is quite narrow. I had crisp TTE views on a skinny patient, but had to scan back and forth to "see it all" (could barely fit LV apex and mitral valve onto the same image) - and that was using the wider curvilinear probe. For vascular access and lung sliding it would be great. TTE works fine but could get annoying with the narrow beam. I wouldn't use it for nerve blocks, especially deeper ones, as any needle in-plane technique would require constant sliding back and forth from needle view to target view.
Everywhere I work has ubiquitous real US machines, though, so I have no incentive to drop $4000 on it. For now it's just an expensive toy. But the technology is pretty cool, and much better than the first-generation devices several years back.