Thanks for the heads-up! I will keep an eye out for either the SRM or IQ2 pedals' release.

I think that only works if the crank arm is of a certain construction (e.g. hollow aluminium). I don't know if the Pinion crank arms are compatible with any given company, and don't particularly want to ship abroad to find out.

I can't use a crank-based solution because I have a Pinion gearbox and it doesn't take custom cranks. And I have a wide 157mm rear fork which the Powertap hub doesn't fit. Chain-based meters AFAIK are not being produced any longer. That leaves the Powerpod. That's probably my best remaining option, but it's less reliable offroad.

I know I can convert Look pedals to flat platforms. But can I convert those platforms to SPD? And would using two converters be rigid enough?