But its better for your hands to be above the keys anyway I would think. It just looks weird however. Also scissor switch keys have less travel so even if its so high you do not have to press down so much.
I do believe that a really flat scissor switch keys do not even need a wrist rest however due to how much pressure needed to press down on them and the reason that they are so low to begin with. Or at least thats what I feel when I type with my macally Ice key