And I use a laptop with mouse in my home office, no external screen.
My desk is full of exposed boards, cat5 cables going in and out of them, rs232 cables going in and out of them, power supplies, switches, multimeter, oscilloscope, breadboard, jumper wires, sd cards, screwdrivers, pliers, random components, and yes a couple laptops. With a big external screen & keyboard and mouse :) (Oh and yes, papers & pencils too!)
I wouldn't want to read schematics too much on a laptop screen. In fact I'm thinking my 30" screen is kinda small for that.
In any case, I'm set now, and my home setup is significantly faster than work-issued laptops. Even with multi monitors, it will be tough going back to a slow setup. Maybe I'll start RDP'ing into my home computer to "work from home" while at the office when everything opens up again.
Maybe I should, as, yeah, my home setup is much much faster than my work laptop.