OK, thanks. I still think I'd probably just use female SIL connectors in the prototyping area - less permanent than soldering components directly.
On an aside, I notice CH_PD and GPIO_0 arent exposed on the ESP pads to allow connection between the two for 'deep sleep'. Is there a problem with deep sleep and this pHat? Sorry, I realise that's an unrelated question to my original post.
Cheers,
Brian