I believe, years ago, CSUSA had that cigar rollerball. I think it was discontinued at least 2 years ago (before we moved) I remember most things as BM or AM (before and after move)
PSI had a pen like that. My brother made me one. It looks like the Big Ben, but in a roller ball/fountain pen configuration. I just looked and they don't seem to have the RB/FP option available now. But the Big Ben has that hex nut looking finial.