Don't think so. Having two different networks in a building is pretty common, but I haven't seen any in-building net not using Ethernet in the past 20 years. Fi

Don't think so. Having two different networks in a building is pretty common, but I haven't seen any in-building net not using Ethernet in the past 20 years. Fiber is still being terminated and turned to Ethernet usually. Not saying it wouldn't be better - but I don't think that's what people would usually do.