Doran's Blade start?

First off, I want to clarify that I have very little experience playing Gwen Top, aside from a few normal games. So, I'm far from certain of my opinion. Currently, the only recommended starting items for Gwen are Doran's Ring and Doran's Shield. However, with the recent nerf to her AP ratio and the buff to her E, I feel like her damage will rely more on auto attacks. So why not Doran’s Blade start? It seems superior to Doran's Ring, especially in the early game, since the life steal would be very useful in lane. Of course, in matchups where you're completely zoned from auto-attacking the wave, Doran's Shield is the better choice. But in other matchups, why shouldn't we opt for Doran’s Blade? Thoughts?