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We consider a very simple model for gravitational wave echoes from black holemerger ringdowns which may arise from local Lorentz symmetry violations thatmodify graviton dispersion relations. If the corrections are sufficiently softso they do not remove the horizon, the reflection of the infalling waves whichtrigger the echoes is very weak. As an example, we look at the dispersionrelation of a test scalar field corrected by roton-like operators dependingonly on spatial momenta, in Gullstrand-Painlev\'e coordinates. The near-horizonregions of a black hole do become reflective, but only very weakly. Theresulting ``bounces" of infalling waves can yield repetitive gravity waveemissions but their power is very small. This implies that to see any echoesfrom black holes we really need an egregious departure from either standard GRor effective field theory, or both. One possibility to realize such strongechoes is the recently proposed classical firewalls which replace black holehorizons with material shells surrounding timelike singularities.

On Black Hole Echoes