The SlowGear is basically a Noise gate, so I guess a Noise gate before wont help you much.
So what is it? Well, let’s take a look at the new interface I’ve made for it,
and let’s take the name into account. It’s a ssslllooowww gear, slow, play it slowly claim down, ooooommmm, …
Well, it is a noise gate with a slow attack/release time, that’s what strip away the attack from strings and let it sound like a bow, but, it is monophonic, hence you’ve to use it slowly.
To make it work like you wish, we could put a frequency splitter before and let it act on the different bands, however, I guess we will fast running out of processing power if we do so.