I live in a 20 year old condominium that has "1990's" style door handles. I would like to update these throughout which is easy enough to do on all the interior doors. My dilemma is how to change out the handles on the front door that opens up into the common hallway of the building. Is it possible to use two different handles on the two door sides (old one that is consistent with the rest of the building on the outside; and the updated one which matches the new handles on the inside). Hope this isn't too confusing!!