I do this regularly. Ilford agrees with me on the grain issue too. http://ilfordphoto.com/Webfiles/20061301945161573.pdf
On films like Portra there is room to place a normal scene easily 3-stops up from what an incident meter might suggest without losing color balance or detail. This does make for a thick neg and requires more enlarger exposure to place the subjects in the scene on the heavily exposed films at the same brightness on paper as those from a "standard" exposure, but the relationships remain.
The problem you are posing here is a camera work problem where the photographer allows the subjects to get too far apart exposure wise.
Shooting a trash shot doesn't help.