I know there is an options using a hack in functions.php to use the deb mode, I used already.
In many clients enviroments there is one server:
1. developing (CODING) -> dev.domain.com
2. pre-prodution (LIVE MIRROR) -> mapped IP domain.com
3. production (LIVE) -> domain.com
In the server 1 I use jetpack dev mode, for in server 2 would be cool to use a real connection thru jetpack, becasue in that serer have the same is a mirrow and need to be the same as the server 3.
Right know I solve this, using a Maintenence Mode plugin, so before launch I do the connection. It solve in a way but is not a real solution.
Jetpack is a fantastic plugin hope they include a new featured for this kind of situations :)