Some Japanese people do this already when writing their names in English, and Wikipedia's article "Japanese name" claims that it's recommended by the Ministry of Education. I'm usually against non-standard capitalization, but because it reduces the potential for confusion I support it here.
I've never seen it used in mainstream news or literature, only in software and scientific papers, and not always then. I just searched for '.jp' in the Linux kernel changelog and none of the Japanese contributors I found wrote their names like that.
