I have been working on some software to do keyboard emulation for iPad. You can use it to emulate the facepanel on your console for use with your offline editor.
Previously I have done this with hardware (see other TouchEmulate projects). This time I did it entirely in software, so you just run a little app underneath your software. Here are some pics of it working with the ETC EOS and my iPad. I am using the TouchOSC software from Hexler on the iPad to talk to my mac application.
Email me if you want to try it.