Swapping Shimano SLX levers (left to right)

I have in the past swapped Shimano XT levers ie left to right and vice versa which was very easy to do. No need for a new olive or insert and I didn't even need to bleed them.
Are the new SLX brakes as easy? Or has the design changed in some way?
Are the new SLX brakes as easy? Or has the design changed in some way?
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