is there any downside to using rack server during development

I want to us the new Pow server for r开发者_C百科uby on rails develop coz it seems awesome!

http://pow.cx/

I would imagine the code would reload just like running it on webrick or mongrel. but I'm not sure if there is any downside to using it in development mode.

The only downside at the moment is it occasionally hangs for me. Forcing it to quit in Activity Monitor fixes things, but it can be a bit frustrating when it happens. Having said that, I've been using it now for all my development, and love it.