I had the 25x LER for a while,used It on a 824..If i remember well ,the massive Eye relief forces you to look into the eyepiece from those 30mm (or more ),but you cant get close or you get blackouts..So has its uses ,but can be weird too..For shooters ,yes, because you need to aim in an specific position,then check the target without moving a lot,and back ,so It makes sense..Now i sketch a lot ,and i think It could be useful for that too,to keep the eyes on the paper,and get a fast peek on the view..but for regular observation didnt do much for me...