The ramp was used to press the bountary layer deviating the direction of inlet. It is clearly that structure of ramp is simple than any conventional inlet though, but the thickness of structure of head-on/frontal resistance of fixed conventioanl inlet is smaller than ramp(DSI).
The non-pore ramp certainly is advanced than pore used ramp. The WHY is always more important than WHAT. You could think why the pore must be used and the effect.
The first benefit is "simple", so if you have to process pore on Ramp, yes, it can reduce weight, we say reluctantly, but you lost simple as one of the benefit in process.
Historically, you can see the pore socalled, was not only used Ramp inlet, also former VG inlet before 70's, but the pore was nolonger being on VG inlet after F-14 emerged.
The key point here is boundary layer. So we can ask farely, if the Ramp was formed improvedly, why take pore unneccessarily.
Of cource, if you give me any practical case, I maybe analysis much better for you, but I don't know why do you ask such superior question.