Does HandeldARBP in UE4.19 support Vertical Planes and 2D Image Detection?

Are these features supported by the new HandHeldBP in UE4.19

No, only horizontal planes supported. The Handheld AR template debug mode gives a good indication of what is supported.

I saw vertical plane detection working in UE4.20preview 3 with this same template but have not been able to get it working on iOS with the newer previews (app built with p4 & p5 crashes on start on device)