Review (5/5): Great for trickle charging LG OEM Battery Charging Cradle Case + 2nd Battery simultaneously.  Not so case friendly.
I was gifted this charging dock and have been using it for around 2 years so I thought I'd chime in. For starters, I didn't like the fact that I couldn't charge my phone when it was in a case so I didn't use it much originally, however, after I bought a 2nd and 3rd LG OEM battery (one of which came with a charging cradle case) I've been using it a lot more.
Although a bit tight, if you plug the charging cradle case into the phone dock cradle, you can actually charge two batteries at once (the 2nd battery goes into the charging port in the rear). Since my phone is typically connected to a Quickcharge 3.0 charger, this allows me to charge all three batteries simultaneously, which is a huge win in my book.
I have this charger dock cradle plugged into a USB hub, so it trickle charges my batteries at 1.5A, extending life by conditioning them. This is quite the contrary to my QC 3.0 charger which, as time has shown, is quite brutal on my lithium batteries and has drastically shortened their life span / capacity.
Everyone's usage and configuration is slightly different, but for my needs this cradle has become exactly what I needed. Hopefully my setup helps alleviate some of your annoyances that I first experienced with this product as well.