I run Birds at my console, Livescope only at the bow. Yes I get some interference on my Birds at the console the few times I've left the Livescope on and deployed and started by big motor to idle my boat a short distance to another brushpile. Most of the times I sleep my units at the console when using Livescope. I'll check for interference next time out.

I wouldn't want to ever lower the frequency of my HB Mega units to 455, kinda defeats the reason on having a Mega unit IMO.
Also been running the Livescope only on the bow for over a year now, so far I haven't had the need for using anything else, maybe could use mapping at times but not 2d, DI or SI, IMO.