Is Yomuus still viable on Adc's and Brawler?

It might be, but Riot doesn't want it to be. It is no longer a snowball / early game item so I imagine you won't want it on them.

https://youtu.be/RsQ3ADpSIDA

Adc side.

It doesn't have the Attack Speed on the active anymore, so less ADCs might take it. If you want the stats and you want the movement, it's still fine.

With the big nerf it took in this patch, i wouldn't recommend it for ADC's anymore. Maybe a brawler, but still unlikely.

Sounds pretty bad eh..