Being a FAIP is not an anchor if you are a good pilot in any MWS. In the F-15E community most FAIPs do very well. For example, I was a fully qualified IP in the F-15E after 2 1/4 years on my first Ops assignment. I know of some FAIPs that left their first assignment as 2 Ship Flight Leads... so I guess its merit based. I upgraded to 2 ship, 4 ship and IP based on my skills... due to the stick/rudder skills I learned during my time as a FAIP. I also was a solid briefer and instructor because of my time as a FAIP. Being a FAIP will not negatively impact your career... being a crappy pilot will.