I don't have pics right now but I have used Bob's handles without a problem on EJ heads. The colors will not quite match up but you get used to it. Bob uses nickel plating on the handles and EJ head will be polished stainless. Nickel to my eye has a slight yellow cast to it. I don't think pics will help show the color difference all that well. If you want a perfect match buy a Merkur 1904 that has a nickel finish.
I tried putting an EJ head on my Bull Mastiff handle ... it didn't seem to want to go smoothly, and I certainly didn't want to force it.
I'm sure that ccb can make a handle that WILL fit the EJ threads, just be sure and specify that when you place the order.
Instead, I put a Stahly head on mine, and it shaves like a dream ... I call this The WBF ... World's Best FrankenRazor.