User blog comment:Poisonshark/PS's "Mysteries of Laning Conventions"/@comment-5077844-20140809180657

Nothing stops you from doing it: Fact is just that most champions are just ost effective in their meta role. Why pick renekton mid if you can easily pick him top where he will dominate just as much? As long as build and playstyle doesn't vary greatly (as in AP Sejuani mid vs tank Sejuani jungle) these "why don't we take this champ....and put him somewhere else (insert Patrick meme here)" ideas are funny to try out, but not really as effective as their meta counterparts.

Marksman top are nothing new, but also a risky for lategame swince you will have 2 squishies which may or may not bite you in teh ass later. Melee bruisers meant for toplane can hardly ever compete botlane, even with a supp, so just switching them out won't work too well either....and mages bot...Unless it's something along the lines of Annie x Brand for maximum stunburst it's very vulnerable to support cc (aka Threshhooks) as well as strong jungle ganks. (since many mages are immobile as hell and ewasy to poke down if you dodge their combos)