Wirelessly posted (Blackberry8700c: Mozilla/5.0 (Linux; Android 4.1.2; GT-I9300 Build/JZO54K) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Mobile Safari/535.19)
In Amman now at the transfer desk - they said it would be fine to transit without visa. Will ask on the ground soon.