Hmmm...
how do you plug a grounded italian plug into an ungrounded receptacle?????
Saw off the ground pin?
Re: adaptors: I don'T like them either, and if I ever have to use an international adaptor (i.e. if I travel to a country more than once) I take 1m of 3x1.5 cord and fit a national plug and a female Schuko cord cap to it. As a British version I'd probably put in a 13A fuse, equivalent to our standard circuit fuses.
I've never had a plug-in transformer fall out of the receptacle, not even with badly worn ungrounded outlets. It stops making contact long before it falls out.
I feel that BS 1363 plugs are just too bulky to be perfect. Fused plugs are user serviceable, hence a risk. It's unlikely having a customer fit a bigger breaker to his panel, but putting in a 13A fuse or no fuse at all is easy. Also a flat receptacle never gives the stabilization a recessed one would give.
And one thing: I've _never_ seen a Schuko plug fall out of the receptacle, or even with bent or broken pins. So why do you think BS 1363 plugs need to be that solid?