The document is updated with initial load times and the "pretty" gwt compile option.

This "pretty" option seems like the best price/performance that enables stack traces. It is faster than Detailed and OBF w/ Emulated stack trace but slower than OBF. It is the fastest/smallest option with Stack Traces

Link to report:
http://www.evernote.com/shard/s8/sh/b273049d-4387-41f0-a65a-75ff57e230a2/b6732b0c289f206ff7faea2a142ed04b