See, I didn't think that GPS/WiFi features like maps were affected by that. I thought it was primarily for actual OTA data like surfing the web, etc. with a momentary but recoverable break in the data during a call. Oh well, we'll see. If it sucks, it sucks, and I'll *gulp* switch to something else.
I have talked on the phone on a iPhone 4 and maps kept navigating me, but who knows about the new maps program.