I am still having the surge problem on all patches. I even ran it through a power amp and regular PA cab and still there .it's probably no difference. the XLR output on the CLR was designed exactly for that. but personally, i always prefer to send anything the Source signal, and not a pass-through like on the CLR.
you should try both and see what you prefer. if it's easier to plug into the CLR for the house feed, then use that. but make sure you know if the knobs on the CLR affect that signal.