I just did so yesterday. They finally had them in stock at my local Apple Store but quickly sold out. My husband managed to snag me and our daughter each a space grey. I had originally wanted gold or rose gold but decided for my smaller phone I preferred black bezels. They did have all the colors except rose gold. Their stock disappeared fast.
I am still going to use my 6SPlus in the house and other indoor locations that have wi-fi. I prefer to handle my emails and FB stuff on an iPhone and my 6S Plus is the ideal size for that. For on-the-go, though, this SE can't be beat. I'm going on a hiking trip next week and I'm happy it will be the SE in my pocket this time and not the 6S Plus I was hauling around last time. But the S Plus is still going with me.
My husband, on the other hand, couldn't handle going back to such a small device and happily handed my daughter's SE over to her after he finished setting it up for her. It's not for everybody.