Ha! I have a little bulk film habit! And the weirder & the older the film the better!
Currently working with Kodalith, Plus X which expired in '65, Tri-X from the 80's, Hawkeye Traffic Surveillance film and Kodak Commercial Internegative film. The closest to the Ektachrome dupe stuff I'm using now is that internegative film, a C41 film used to copy slide film & has a low ISO. Supposedly similar to Vericolor. Here's an example:
A friend shot some in a Holga and it looked like it was from another planet... another planet as depicted in a cheap 60's B-movie!
As for shooting that Ektachrome dupe film, I was thinking of using it in an OM2n and shooting it at ISO12 to start with and moving on up from there. It'll depend I guess on what conditions are like in the next few weeks. It gets so overcast here this time of year here in southern Ontario that I might not have too many days to use it. I'm guessing it needs bright days. I'd like to try to develop it at home but I haven't picked up a kit (C41 or E6) yet. Probably after Christmas when I have a little more spare time. So you'll have to be patient!