Nope, sorry, I only wrote the preview article with the Glenn Edens interview and explained that the lecture was coming up soon. Unfortunately I haven't got a Silicon Valley correspondant. If anyone reading this wants to help out, and has some writing experience, just let me know...
The Epson HX-20 debuted in 1982 -- same year as the Grid Compass and (I think) the Grundy NewBrain. For comparison, the Matsushita (Panasonic and Quasar) "Hand Held Computer" series debuted in 1981, along with the Sharp PC-1211 (a.ka. Tandy TRS-80 Pocket Computer 1). Others like the Gavilan SC and Kyocera Keytronics 85 (a.ka. Tandy Model 100) were from 1983.
I may not know much, but I know portables!