Scimitar can be suprisingly aggressive around whitetail and other exotics. I've seen them charge and scare off herds of aoudad from under feeders many times. Aoudad are usually the worst as far as aggressive behavior under the feeders and it normally takes a stick of dynamite to move them off but if scimitar show up, even the aoudad do a disappearing act.
Whitetail are on the bottom of the pecking order at feeders when it comes to feeding around exotics. Over a long period of time, exotics can decimate a whitetail population. Studies done by TPW under their management studies have proven this.