Mmmm. not really. FK1000P is as good as any of their conventional sealants, and G-Techniq C1 is tricky to apply and needs totally product free paint because its one of those nano/ceramic types. You could use any decent Quick Detailer on FK1000P but Finish Kare make one for it FK #425.
http://www.cleanyourcar.co.uk/detail.../prod_591.html