I have seen the same thing on Canadian Hornets and USAF A-10's.
The problem with radar is that the fuselage it self gives a quite small ehco compared to e.g. the turbine blades. This is why the B-1B e.g. has a very effective shielding so that the blades will not be visible on radar. Different locations for the intakes have also been tried (as everyone knows...). So on an older aircraft I would assume that RAM-paint doesn't help that much, but on newer planes where the fuselage presents a relatively large part of the total RCS such paint probably will be more usefull.
The problem with radar is that the fuselage it self gives a quite small ehco compared to e.g. the turbine blades. This is why the B-1B e.g. has a very effective shielding so that the blades will not be visible on radar. Different locations for the intakes have also been tried (as everyone knows...). So on an older aircraft I would assume that RAM-paint doesn't help that much, but on newer planes where the fuselage presents a relatively large part of the total RCS such paint probably will be more usefull.