I like to say I edit “with” a laptop, not “on” a laptop. I can go for days without ever opening my MBP. From the bag to the desk and then back to the bag. At the office or at home pretty much the same thing. Not saying I couldn’t, just saying I don’t.
Rendering times aren’t that important in my overall workflow. Dynamic linking Photoshop and Illustrator files, Live Text templates from After Effects and sending a timeline with however much audio I have in it directly to Audition with video and then exporting the finished product from there is where I see my real productivity boosts.
I like and use FCPX for certain things, but the Adobe workflow saves me a ton of time no matter what machine I’m on.