Has anyone any real experience of the EOS Integrated Cleaning System? Canon's adverts make it sound very appealing. I have done a Google search on the subject and some reviewers suggest that it is not all it is cracked up to be. The old time honoured methods to remove dust are still needed. But then again reviewers often try and do things (abuse cameras in the kindest way of course, test to their limits and things) which most users frankly would never try. If it is any good one of the new range is attractive to me since dust is my big bug bear with digital. George