[Spot colors not appearing in TIFF and EPS]

Please do consider adding  "spot colours as TIFF" ... as this is the only thing stopping me completely changing over to affinity photo.

Same here. For one of our clients we have to integrate a Gold-Pantone color in the images.

In Photoshop this appears as a separate color channel (in PSD, TIF and PDF). When used in InDesign the Pantone-Color is automatically added. And when exported as a PDF for printing the Pantone color is exported as a separation.

 

If Pantone colors worked the same way in Affinity Photo, we'd switch from Photoshop in a heartbeat. Until then, we just can't.