Nope.
Dont think the damage from DFT would do enough to compare to her immense sustain potential through Windspeaker path.
To be honest, you could fidget around with her runes and get a better result out of auto attacking for poke.
I had full attack speed ( with armor / mr - yellows / blues ) I was able to dish out a lot of bananas while dodging since my aa animation was so much quicker.
Zones pretty well, you auto occasionally when enemy is going for CS. If your ADC harasses along with you, you just attack until you receive damage, then drop a Q for HP / E silence and back off and let your ADC do the rest while you heal UP
Your E snares after it's silence duration is over. So it's a great for cutting enemies pathing options.
I don't know if I would do this in a ranked game though, but in normals, I get messy with build variation / rune mastery setup.
It's just so much more fun playing champions with cheesy builds. Especially Lethality / Mpen lulu, your autos can probably rival Zyra damage.