Evansville right now is sitting on an RPI of 95 with a forcasted RPI of 69. A loss to a top 100 RPI team would not be that devastating to UNI's at large chances, especially since that game coming up is at Evansville. Right now, Evansville has done too well this year to this point to Evansville anybody.
Part of the definition of Evansvilleing another team is that your RPI is so bad that it is a horrible loss for the other team. There are plenty of teams in the Valley that are bad enough that a loss to them will really hurt, but Evansville is not one of them. It would sting, but would not torpedo an at large chance all by itself.