Dear Sam,
Yes, you can use SAP Screen Personas 3.0 on any Web Dynpro for ABAP applications, as long as you meet the minimum requirements. See also note https://css.wdf.sap.corp/sap/support/notes/2050838 which has a detailed list of restrictions. If you are interested in a short call, send me a message and we can arrange for it.
Cheers,
Klaus