I made a LAHSO in BOS on a Dash 8 in the jumseat some years ago, while a DC10 was landing on a interecting runway . Great .I asked what happens if both decide to go around at same time in poor vis ? I agree the likelyhood of this happening is remote, but I could hear Murphy laughing out loud in the background.
LAHSO does have restrictions on it. If the visibility is poor LAHSO isn't allowed.