Raglan on 1 needle--it is possible
Thanks to the Knitters Review Forum, I do think I can make this cardi on 1 needle from armholes on. Will post complete instructions, as well as progress report. Back is done to armhole, started left front-- done halfway to armhole. Had to buy Fee's Sweater Workshop Book and Zimmermann's Knitting Workshop for help here, but at least all armhole dec will be the same (I hope). Also will be setting in zpper by hand (no machine to do it). Stay tuned.