In my opinion, leather covered pads should be attached by screws & the screws covered with leather wrapped plugs.
This is the traditional way to do it, looks nice & neat & if you need to get the pad off for any reason such as a stock finish touch up or to recover the pad (leather covered pads do get worn & nasty looking rather easily if used around briars) it is easy to pull the plugs to get at the screws & remove the pad.
Removing any glued on recoil pad leather covered or not is an unnecessary PITA & I don't understand why people want to glue pads on.
Just my $.02 but it's not worth it to me just to avoid having plugs showing on the face of the pad & I actually prefer the traditional look & especially a leather covered Silvers type pad with the large plugs.