Is your keyboard well used, and do all keys work? I have heard that the Aristotle switch does not last very long, but I might have mixed that up with them being more frail and breaking easily if you try to open them.
I had a keyboard with them, but desoldered all the switches. I like that they are more tactile than Cherry MX Blue. Unfortunately, the sliders can not be transplanted into Cherry MX housings. (I've tried)