Alright - good news.
Tonight I got my VXDiag VCX Nano from Amazon and set it up. Installation was pretty painless, shows up as another VCI option in Techstream once you install the drivers.
What I noticed right away was communication with the vehicle was faster - way faster. even than the 2.0.x miniVCI cable.
Went to load up my new TPMS sensor IDs and it loaded them quickly and painlessly.
Viewed sensor data and the new IDs are loaded in.
I was only messing with it for a bit after that and I only got one tire to display pressure via Techstream, but I am not too worried I will did the "air the tire down rapidly and air it back up to activate the sensor" and it did display on the data stream in Techstream.
Probably going to drive my Viper to work tomorrow, its supposed to be decent weather here in Wisconsin. Hope to get some miles on the LC this weekend and confirm if the TPMS all read properly.
Amazon product ASIN B075Q5TZYH
Thanks for the help everyone.
Would you mind letting us know which Techstream version you used? I'm looking into installing TPMS myself too