I've used Windows Mobile since way back in the Treo 650 days. It was WM and BlackBerry devices for me. Windows 7 came along and I started out with an HD7S then moved to a Focus S when my HD7S went swimming. Moved from that to a Lumia 920 then about a year or so later to a 1520.
Dropped that in a heartbeat for a Note 4 then got a Note 5.
Currently my daily drivers consist of an unlocked BlackBerry K1, an unlocked BlackBerry Classic, an unlocked BlackBerry Bold 9900 circa 2011/2012, and I just recently picked-up an unlocked Alcatel Idol 4S W10 to play around with. Will it replace my Android device? Not in a million years but it seems pretty decent for what it is. Hardware is great. OS has its limitations and of course the dreaded app gap is the black eye in the game.
I've been carrying the Alcatel for the past few days. With the exception of the above downfalls, so far so good.