I own those vortex black on black PBT caps, the aren't cherry profile, next to my GMK cherry mods 2mm higher on row 4, 1mm higher on the bottom row, 2mm higher in home row and 1 mm higher on the top row. the number row is only half a mm difference hope that helps.
Also the font is ugly so I wouldn't recommend it. Buy blanks in cherry profile from imsto or feng. (cheaper)