That depends on what you think should be the main function of a smartwatch. If you want a smartwatch to be essentially a smartphone on a wrist, then sure, you would want a rectangular screen because "reading text, looking at pictures, reading maps" would be your primary use cases. The round watchmakers clearly aren't targeting such users. Android Wear in general seems to be centered on presenting focused "glances" of information rather than being a general app platform.
3/4/15 at 8:16am