I think it´s pretty self-evident that you can
somehow percieve the devices slaved to the host from inside, simply as a part of having a direct connection to them.
The remaining question is how this actually looks like in the iconography of a host. It´s less of a crunch and more of a fluff omission. Which is somewhat amazing, given the fluff/crunch ratio of SR5.
My take: Just show a kind of "Proxy" for the device icon in the host, and maybe integrate it into the host iconography. And forget about industry hosts.