No, not with poinciana but ficus ... lookout!
If I get ficus sap on me it's like petrol and burns/stings with a rash that lasts up too 3 weeks and skin flaking off. Itching that'll drive you nuts.
With the sawdust of ficus similar but it tends to get tiny blisters then peel like sunburn. Never used to then one day out of the blue bang ... allergic reaction.
Many people have same with silkyoak, but so far for me just ficus.