I've been on both ends of PROJECT: Ashe and I just can't understand how people have trouble with it.
Her E drone doesn't even remotely resemble her ult projectile. It's even a different color - it's black and has twin helicopter rotors, what more do you want?
They're both fast projectiles but going up against the skin for the first time I never felt the need to try and dodge her drones. Her ult does look vastly different though, so I can see people sometimes needing a second to register the new particles. But honestly, we change particles and such all the time and people don't claim a skin is "Pay 2 Win" just because some projectiles look different. If every skin had to have identical particles to prevent confusion then we'd never have cool skins for anyone.
But seriously, if you flash or burn an escape on her E drone, you just aren't paying attention. If you have this problem ever again after the first time you've seen both particles then the skin isn't the problem.