AMC3 CAT.POL.A.210 (b) allows an operator to use reduced lateral obstacle clearance if the crew can adequately track visually.
Obviously, to use this requires weather minima to allow visual navigation, so no operator is going to base their operation on it unless there is no other option since it is restrictive. They will normally publish a standard IMC OEI procedure to be followed regardless.
Ones that i have seen include LSGS & TNCM, where fairly ovious bits of mountain are involved.