You will enjoy greens if you have been using blues. I use them at work as well. It is nice there where I am doing more burst of typing, and when I get home and type on some blues you feel like your flying. I do type a bit slower on greens, but since I have started using them my speed on other switches has gone up.
I've noticed the same thing. I use browns at home. My typing speed (and accuracy) has increased since switching to greens as my main switch at work.
I personally use Browns (Still a bit of a newbie to this whole mechanical keyboard thing, I only have one XD ) but I notice the same thing when going from my laptop keyboard (Which I really like, I don't find anything at all wrong with it. It's an HP 4320s Probook) to my Mech at home. I'm going for greens because I want something unique, I haven't tried blues, and they are heavier.
I kinda figure the heavier switches akin (prepare for an oxymoron) to a crisp rubber-dome/membrane: Heavy, but crisp. My family might get a bit tired of the click-clack, but with a dedicated computer room, I don't think there'll be too much complaint. I also think that I'll bottom out a lot less on the Greens. I currently consistently bottom out on my browns (I love them, don't get me wrong), so I think that should change when I'm typing. Gaming, not so much, but I really should try to bottom out less to help my speed. I can get 60-90 WPM when i'm copying something (obviously less when i'm typing something like this because I have to think about what i'm going to type), and i might be able to squeeze about 10 more out when i don't bottom out.