I have just been looking at the BARB figures for the week ending 17/10/10
http://www.barb.co.uk/report/weeklyTopProgrammes?_s=4
ITV2 HD highest viewing figure for that week was 13,000, the rest are are not great either 5,000 makes it in at number 10. I cannot see ITV wanting to keep it exclusive to Sky for to long with those figures!