FWIW, I've seen a lot of complaints about printing from Kodak's chromogenics onto conventional B&W paper, but I've never had problems. Sometimes I need to print at a grade or two higher than usual, and of course with much longer print times, but that's about it. I suspect that there are important interactions with paper brand, enlarger light source, and/or enlarger filters. (I've used Agfa MCP 310 RC paper with a Philips PCS150 tri-color light source.)