Hi Urs,
I also own Aivlasoft EFB for years now and used it with FSX and recently P3D successfully. I also fly X-Plane 10 parallel to P3D and whenever I move to XP my trusted EFB can only be used for the general planning and maps but the online stuff and moving map does not work. With XPlane I use FSC9 because it works via XPUIPC which is a free FSUIPC like plugin and allows to connect most FSX Tools that use FSUIPC. You mentioned that you will support FS9 with v2 - I guess you are using FSUIPC? Then there is a good chance that X-Plane will be supported as well.
Should you ever need support for testing this me and others will be available to help
Kind regards
Kosta