Using Linkwitz-Riley filters for ambisonics shelving?

In ambisonics shelf filters are used to enable separate decoding for low frequencies (below 500 Hz) and high frequencies as auditory localization depends on interaural time differences for the former and interaural intensity differences for the latter.

Shelf filters are generally implemented as finite impulse response filters using convolution. I am pondering the possibilities of using 4th-order Linkwitz-Riley filters for shelfing. Linkwitz-Riley filters when added up again reproduce correct intensity at all frequencies and the low and high components are phase-aligned at all frequencies. These are the properties that make them suitable for crossover in digital circuits for loudspeaker designs. Maybe it would also work well fro shelf filters?

Below are screen captures from a Max patch made to double-check the frequency response of filtered and combined signal. tl.crossover4~ is part of tl.objects.

Spectrum of filtered and raw signal with white noise as source. Click on image for closer view.

Spectrum of filtered and raw signal with pink noise as source. Click on image for closer view.

The Max patch is below.

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