Like the others I am fascinated by this. I have several dozen transparencies but gave up shooting more because of the expense of the Ilfochrome process for making prints using this processand
I wouldn't count on RA-4 reversal as a substitute for Ilfochrome (or discontinued reversal papers/processes). Results tend to be high in contrast and the color balance tends to be a little weird. Some paper/developer combinations produce mottling. If you've got the right subject, the results can be good (either because the problems are minimized or because the odd characteristics work with the subject), but as a general-purpose way to get prints from slides, I don't think RA-4 reversal is a good way to go.
OTOH, perhaps there's some "magic combination" of paper and developers that will make it work well. If so, I've neither found it nor heard about it.
By all means, experiment. I've got a print hung on my wall that was made with this process. I've got more prints from slides hung on my walls made by scanning and digital printing, though.