I normally use Postman, and the one feature that turns me off right now is the inability to import from a URL. Specifically, Swagger.

Postman has these type of import options: https://dl.dropboxusercontent.com/spa/4moihw0kt47f2sy/lona1q...

I also tried saving my Swagger JSON spec to a file and importing it via the Swagger Importer, but it failed. =\

Otherwise, it seems gorgeous!