A quick glance at the birth notices in the local paper shows that 90% of babies' birth weights are announced in pounds and ounces, despite noone of parenting age who was schooled in Australia being instructed in anything other than metric. I suspect that if you asked these new parents to do some calculations in imperial measurements that they'd fail spectactularly. It's doubtful that they'd know their own weight in anything other than kilograms, which makes comparisons with their offspring rather difficult.
Another area where imperial measurements have steadfastly refused to be supplanted is in computer monitor sizes. They are solely advertised as being 17", 19" and the like. However, televisions have, for as long as can remember, been sized in centimetres, with the old standard sizes being 35cm (small), 51cm (medium) and 63cm (large). Interestingly, with the recent growth in popularity of much large screens, some are being advertised in both centimetres and inches. Perhaps this is due to overflow from the computer industry, from where LCD monitors are being sourced for LCD televisions.