I love the G2 and LG made the right improvements especially squeezing the display that it's not that much bigger than the S5 which I love. Size was the problem with Z2, Note 3 and M8.
I love that Samsung and LG share the same features I love like MultiWindow and Dual Window.
If this was only Waterproof I have no doubt this would definitely be a keeper. It's hard going back when you get used to it.
Pro S5