PLEASE Do not play and AD mid like Zed/Talon without communication first.
I can tell you how many times recently I see people locking in something like Zed mid fourth pick when we have no AP in my ranked games. If you want to play an AD mid LET YOUR TEAM KNOW FIRST so that they can get AP fit into the team somewhere else. Personally my favorite champion is Talon, but I don't get to play him at all almost because everyone plays AD top and jungles. In the case I almost always and forced to play Cho. When you lock in an AD mid with no AP your putting the rest of your team in a bad position so let us know at the start of champ select.
Edit: I'm not saying that it is impossible to win full AD because frankly it's still easily accomplishable. I'm just saying that by communicating to help set up a solid comp, your setting yourself up for victory and AD mids are where I see this problem occurring the most.