I have had an Apple Watch since SO, but have always sold the old one when I upgraded. This year I have embraced my inner disney fan (don‘t judge) and could not turn down the S6 product red (picture it with mickey face). However, while the red is fine for day to day, sometimes I need to be taken seriously, so for the first time I am going to keep my previous year watch (s5) with gold to use on more formal occasions. Not sure how to balance two watches, do I keep them both charged or is that bad for the battery? Anyone with experience using two AW’s? Tips?