I am certain I do it different ways. I did notice, however, that the Avery Elle pigment ink pads have directions specifically saying you should pat the ink onto the stamp:
Push me directly onto the stamp of your choice.
Stamp your image.
I wondered, then, if this is what one should be doing with pigment ink pads.
I know also that the large archival ink pad, there is no way you are going to do it that way...
Will be interesting to see what others say!