Address book -- turn off phonetic sorting?

In order to make better use of the iPhone 3GS voice control dialing feature, I have add phonetic representations for some of my contacts. However, when I do this I noticed that the address app sorts these contacts by their phonetic spelling. (For instance the name 'Zhou' is pronounced 'Jo', and is sorted under the letter J).

This seems kind of weird default behavior and should at least be configurable. Anyone know some way to do this?

Thanks