Finally got hold of the Vibro cups and they truly are a beauty to behold!
Still slightly shaky after a long weekend festival and with slightly trembling hands I soldered some stock cables to the already liberated 225i drivers I got from the FS section a little while ago. The rest of the installation was a breeze, the included foam makes a perfect seal to seat the drivers in the cups! They are now glued to my head, wow, they sound great!
Never had a chance to listen to the drivers before installation, so I can't really remark about the difference between the cups, but I have other Grados, so I will be comparing them soon!
Image has been manipulated a bit, removed all the colour from the pic, leaving only the woodies in their original colour, no further tweaks.