At my company, we've switched over from browserify to webpack for a multitude of reasons, lazy loading being one of them.
Putting things in multiple bundles in browserify took some configuration changes as well as special code. Here is a great guide for that http://esa-matti.suuronen.org/blog/2013/04/15/asynchronous-module-loading-with-browserify/
With webpack, adding a new bundle just means an extra entry file line in the configuration's entry file line. Here is a quick guide to that: https://github.com/petehunt/webpack-howto#7-multiple-entrypoints. In the case of lazy-loading, you don't even need to change anything in the configuration file, which is awesome - just use the asynchronous require syntax detailed here: https://github.com/petehunt/webpack-howto#9-async-loading
Here is a template for a setup very similar to what we use at https://bench.co in production. https://github.com/jeffling/angular-webpack-example/
