Finally got rid of the "MI" grips (i.e. "Marushin Industries") after sourcing this pair of wood grips made by Taiwan's Wa Shan...

At first I want to get the rubber ones by Pachmayr but it seems it is much difficult than I thought...anyway just found the US online shop that ships overseas so I'll order one anyway along with the one for my Colt DS (I hate myself when I was earlier offered an original Colt rubber grips at reasonable prices and I let it go...)