Similarly, we use the XLH1 with the Anton-Bauer battery/goldmount... and while we rarely use lavs (either wired or radio mics, we usually favor the Sennheiser MKH416 as a boom mic), sometimes when needed we do use Lectrosonics.
We don't use a dual receiver, we usually use one or two individual Lectrosonics, as needed. Nothing as complicated or refined as a box holder... we just use velcro. Our AB "bricks" each have a velcro pad (loop side) stuck to the back, and each Lectrosonic receiver has velcro on both sides, loop side on one side of the receiver and hook side on the other. If we just need one mic, we just slap it on the back of the battery. If we need two, we just stack them up. The little receivers are so light that the velcro works just fine.
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