@MontereyJack,
MontereyJack wrote:So far from my standard (mostly) Midwestern English pronunciation that I didn't realize in Churchillian it would rhyme. I'm with the don't rewrite it crowd. "Paw-paw" would be pretty obscure (I've always heard the fruit pronounced "pawpaw" but spelled "papaw" for some reason).
Within the English speaking world, there are a number of important variations in pronunciation, and one of the most noticeable by its presence (or absence) is "rhotic pronunciation". That is, sounding the letter R when it occurs part way through a word or at the end, in words such as card, dark, permission, war, car, large, and so on. Everybody, as far as I know, sounds initial Rs in e.g. road, rage, real, rabbit.
If your accent is non-rhotic, jaw and war would probably rhyme.
Areas with non-rhotic accents include Australia, most of the Caribbean, most of England (including Received Pronunciation speakers), most of New Zealand, Wales, Hong Kong, Singapore and areas of South Africa.
Rhotic pronunciation has vanished from British, Southern, "upper-class" and "received" speech, but it is still very much alive in south western English accents. Scotland and Ireland still have it. It is how Brits think all Americans speak.
Canada is entirely rhotic except for small isolated areas in southwestern New Brunswick, parts of Newfoundland, and the Lunenburg English variety spoken in Lunenburg and Shelburne Counties, Nova Scotia.
In the United States, much of the South was once non-rhotic, but in recent decades non-rhotic speech has declined. Today, non-rhoticity in Southern American English is found primarily among older speakers, and only in some areas such as central and southern Alabama, Savannah, Georgia, and Norfolk, Virginia, as well as in the y'at accent of New Orleans. Parts of New England, especially Boston, are non-rhotic, as are New York City and surrounding areas. African American Vernacular English (AAVE) is largely non-rhotic.
England: green is non-rhotic
Some of the US: red shows areas of non-rhoticity
As for "jaw-jaw is perferable to paw-paw", that is clearly nonsense.
I have seen paw-paw with and without hyphen or space.