Hi Paul - this post really caught my attention because I thought my darkroom days were over due to chemical sensitivities. So, after all these months of reading APUG, this is my first post
The answer to your question is yes, I've used Silvergrain's Tektol since April and love it. It is HUGE help for me. In my case, I'm extremely sensitive to hydroquinone, metol and rapid fixers. Otherwise, I'm good!! Most people would think that would be the end of my darkroom, but I switched to XTOL for film (much better than most other film developers for toxic ingredients), Tektol for paper (RC & FB) and plain sodium thiosulfate as my fixer.
I'm curious as to your symptoms.? Mine were nasty sore throats. It took six months of research and tests for me to finally arrive at this solution with Tektol. I was determined! I still feel some effects from XTOL, but I get by and anxiously await a film developer from Silvergrain as well.
good luck
Bruce