Yes. I have powered both a TF and a MF with a single One Spot. Each needs the L6 adaptor. It works and doesn't work. Let me try to explain.
When using TF and MF in the effects loop, powered by a One Spot – dead quiet and no problems using either unit.
When running TF and MF in front of the amp – with no other pedals – there is a clearly audible 60 cycle hum. It doesn't matter if powering one or both units, flipping the sequence of pedals or using different One Spot connectors – the hum won't go away. It doesn't matter if the One Spot is powered off the PP2+ or a separate power strip.
When running the included Eventide power supply for each unit in front of the amp, it's dead quiet.
I found this incidentally when switching from an amp with an effects loop (where I run MF/TF) to an amp without an effects loop. The amp, even when set up to run very clean still gave the same noise. Hope that helps.