Honestly? No. The seamless manner in which Apple products work together is a big selling point for me.
What they said^I would not have known as much about it -- I tend to ignore non-Apple "things". I'm not a fanboi, I just like my ecosystem's components to all play nicely together and I'm spoiled by handoffs, so I wouldn't even look at a non-Apple watch.
I did when I bought a Pebble. It is a great concept but the execution is lacking. A 3rd party competitor is always going to fight an uphill battle against Apple.