I finally installed my eGR I bought during the Black Friday sale. Works great, but I have a huge features request LTwoo should implement. I was previously running 2 wheelsets with both XD and HG cassettes. When I was running mechanical, all it took was a slight adjustment on the barrel adjuster and lower limit screw. It took less than 30 seconds to adjust. Without having wheel profiles, I now have to individually adjust each cassette cog, regardless if they're both 11 speed. I know others have multiple cassette speeds and that's just another issue worth addressing. As it stands, you can only adjust for 1 cassette and 1 speed selection (10, 11, 12, etc.).
Anyways my initial first impressions is that it works great. The one perk with electronic shifting is that every shift is perfect and the improved shifter button haptics on the eGR shift levers are much better. Plus having learned the quirks of the LTwoo system with the eR9, makes me appreciate the subtle improvements on the eGR. Battery-wise, I picked up some cheap blue batteries, but surprisingly they work quite well with no issues. I think LTwoo did themselves a disservice with their shoddy customer service and bad QC on the early batches of eR9/eRX hardware. The engineering is there and for those willing to get their hands dirty, this groupset is an amazing value! I bought my eGR for less than $300 USD!