I think I see a serious problem with low-power operations.  The crystal used by the DW module takes quite a long time to warm up, and settle down.  Below are two diagrams.  Labelled “Figure 2” on the left is DW’s version.  On  the right is a diagram copied from a comprehensive discussions of crystals from HP,

Notice that DW’s version has been edited to remove the important units.
HP’s caption:
Figure 25. A is a RTXO warm up curve. B, C and D are typical TCXO warm up characteristics. The long time (3 hours) is due to changes in temperature inside the instrument. E and F are oven oscillators. Stability is achieved in ≈20 minutes.
That might be a problem as far as instant startup is concerned unless we keep the DW crystal running.

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