Definitely learn the networking stuff. I'd argue that one of the integrator's biggest burdens moving forward over the next decade will be the networking stuff. Security is becoming so crazy an issue, and automation is becoming so heavily tied to networking (whether that's a good thing or not, and mostly it's probably not), that I can't see how anyone who isn't either heavy on the networking or working very closely with someone who is is going to be considered a top dog in this field. Depending on an unattached third party for the networking substrate, the quality of which will significantly define the experience for your customer, doesn't seem a viable approach anymore.