VG247 reports that EA are very happy about getting to work with Insomniac. EA Partners' David DeMartini says that "[p]reviously Insomniac has only been on the Sony platform, and they'll continue to be on the Sony platform [...] But hopefully in partnership with us, they'll be able to take it out to at least twice as many gamers as their other games have enjoyed - both by working with us and expanding onto [360]."
In short, "we're happy, happy, joy, joy".