I got used to it but throwing Dreadwinder without thinking just feels weird.
You can just throw it on cooldown as you as your don't overcap the red diamond.

By the way, anyone else felt like Viper suffers a lot from the "animation lock" when throwing 2 oGCDs back to back? I'm especially thinking about the 2nd oGCD after the Dreadwinder GCDs, I spam them but they don't queue and don't go off. I'm used to play GNB so double weaving should be that big to me but someone, Viper throws me off.