As I said on "that other forum", I've seen no downside at all to TF-4 fixer. I simply develop the print, then a 30 sec. rinse in running water, then into the TF-4. No need for HCA, just a 15 minute wash. Then, into the selenium. Although I had nagging stain problems before TF-4, I've had nary a stain on a fiber print since. Is there a direct correlation? I don't know. It's so much easier that I am a little surprised that TF-4 hasn't become more popular.
Does anyone know of a company that brings Formulary products into Gareth's part of the planet? They're a fine company, and I like to support them. Good stuff, too: I use WD2D+ and 130 paper developer.