After a not inconsiderable delay, I finally received a B3400 blocking filter from Lunt, but have to say the wait was worth it.
The Lunt filter shows less ghosting and a significantly brighter image than my Coronado BF30.
Important note: Lunt do not recommend their filter for visual use with Coronado etalons...apparently there may be I/R leakage that could damage your retina. But for imaging only, there is no risk.
Seeing wasn't great...but first light with the new combo
is here