Thanks Mr Paul.
I've just ordered a Hope for the short term and I'll see how it goes. I've discovered that two Hope lights will provide far more lumens (on paper at least,) and are cheaper than an Ayup, albeit at a hefty weight penalty.
I have a headlight on order too as it's unerving steering into darkness, despite having a pool of light in front of the bike
This is for singletrack BTW so I need as much light as possible.