I have my own PC strapped under my desk connected to public Wi-Fi. I use it to do all my work. My company pc is left turned on but disconnected, sitting on top of my desk to dissuade suspicion.
After about a year the network through that router started to slow down. When we checked why we realized that we had more than 40 wifi clients, as other (non-dev) teams learned about the network through the grapevine and actually the new employees from sales (the neighboring office) were told to connect to that network directly - as the process to connect to the "normal" network was too much of a hassle.
reminds me of a very old bash.org
We can't connect to anything internal from outside, there is VPN access but it seems a step too far to use that all the time.