Is Samsung's Gear Fit a smartwatch or a fitness band? Could it be both, and if so, can it pull it off? These are reasonable questions for a device that doesn’t really have one distinct purpose, yet manages to carve out a unique identity. Straddling the line like that can be risky for an unproven gadget, but then again, the Fit doesn’t usually act alone, relying on certain Galaxy devices to expand on its capabilities. The result is an interesting one that shows promise, though a slam dunk remains elusive.