if you want to stick with a dedicated recorder and spend a little less $ (the d:vice is not cheap at $660), the DPA rig i'm putting together is, i think, the stealthiest way you can construct a DPA rig while still using a dedicated recorder and retaining the microdot terminations:
DPAs of your choice (4060/61, 6060/61) > custom y-cable > 9v batt box > small recorder of your choice (Roland R-07, Sony PCM-A10, etc.).
my particular rig is going to be 6061s > y-cable > SP-SPSB-8-MKII > R-07. the y-cable is the trickiest part as you have to either buy it pre-made from Core Sound or have it custom-made to order. the cable, batt box and recorder can be done for around half the cost of a d:vice depending on the options you choose. the advantage of retaining the microdot terminations is that you can then run them into a d:vice someday if you decide to get one, or continue to run into other preamps that accept microdots, as compared to getting the DPAs terminated into an 1/8" plug locks you into running that way only. and doing it this way will be tiny and nearly all plastic -- no worries on metal detectors (not sure how much metal is in a CA-9100 and microtrack, by comparison, but they definitely appear bulkier).