Someone who is a sneaker-shoe guru. One who prides themselves in sneaker fashion. Believes footwear is an accessory and is more more than a just tennis shoes. (On point: Sneakers & Tennis Shoes are diff.) Sneakers are fashionable, meant to be floss while, tennis shoes are mean to be played in!
A Sneakerologist would wear or be knowledgeable of brand like:
Supras, the NEW Jordan's, Greedy Genius, Kanye's LVs///etc.