Whoa..! I have to try this!!
Quote..."By the way, are there any other regular films that this will work with?"
Maybe Ilford Delta 100 and 400, according to the Datasheets, their spectral sensitivity is the same as Delta 3200.
Back in the spring I made a couple of testshots with Delta 100 with a Heliopan RG715 filter, at f:8 and 32 sec. there was an EXTREMLY faint image, because I already had a bunch of Maco IR820 in the freezer, I did no follow up tests, but when it can be done with Delta 3200, it may be interesting to try it with Delta 100
Tom