You don't have to wrap your async methods if you don't want to. Meteor prefers to use fibers since a lot of people find them easier to work with, but if you write async code it will generally work fine. The one thing is that when you want to call back into Meteor code, you need to do it in a fiber, so you'll probably want to write a little helper for that. Here's my version:

https://github.com/sandstorm-io/sandstorm/blob/master/shell/...