No I don't have any problem with F++ developing a plugin to use PFE with XP and I will be glad to offer any help they might need in the future.
As for giving me a headache with regard to support, it won't, because I can't support it if you're using it with XP!! I don't have XP so there's nothing I could do. If you experience a problem with PFE running under XP my first response would be to ask you to recreate it using FS, if you couldn't then I would assume it was a problem with the plugin and redirect you to F++
Simple
