It's a shame that SRAM bought Powertap & then immediatly discontinued the C1 chain ring & the $350 price point it sold at so that it wouldn't compete with their Quarq offerings at 2x the $$$
Fwiw: Lacing in a new hub may/may not be about the same cost & save all the troubles of crank compatibility. I for one like the idea of the meter not being a more-or-less "permanent" part of the bike. You can always keep the wheels for future bikes & the possibility of using q-rings/ossymetric/oval rings of different sizes is preserved, should you decide to ever try. (Which I suggest you do. They're awesome.)
My wife & I had a set of P1 pedals for our tandem. Neither one of us liked them. They worked fine but the SPD-SL/Look Keo road cleats is just something neither of us could stand...That & the battery life was terrible.
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I shouldn't have to "make myself more visible;" Drivers should just stop running people over.
Car dependency is a tax.