Look, I get it. We're all busy. We try to fit in as many activities as we can into one moment. I've been there where I'm showering, shaving, and brushing my teeth all the same time. It gets rough when you confuse the toothbrush with the razor, but anything to save a couple of seconds. Ultimately, I've stopped doing that as much though, because that's no way to live. Just enjoy the moments and slow down. No one is going to die if you're two seconds late.
That being said, I'm down for this. Mostly because the smell of coffee is very enjoyable in the morning. I figure if a shower can snap me awake, a shower with coffee will give me superpowers. At least once I'd want to try pouring the coffee over myself. I'm just a curious person like that.