Actually Bear, a lot of road FWD cars do still spec the front to toe in, but toe out is what you want
Toe out will not help your wear on the inside though.
YOu say slightly increased Neg camber... what from?
Have you adjusted more in, what sore of Neg are we taling about any more than about -1 will be a lot on the road and you will wear in insides just because you spend so much time going in a straight line. On the track we spend so little time going in a straight line and we are happy to sacrfice wear for lateral grip, but our tyre life is measured in heat cycles not on '000 of miles