I've been using it since day one. I like NavTraffic because it works in most of the areas we travel. NavWeather isn't the best but it does work. What I like about it is when you are on a long trip and want to see what the weather is like ahead of you. Actually, I use the Personal Assistant and have the operator check it for me since they can see where you are at and where you are headed.
I tried both during the free intro period and did not think they would be worth the subscription. Not comfortable with the fact that the suggested detour info did not tell you how much time and miles you would be adding to your trip. I agree that the weather info is to broad and seems more like an interruption.
I have a dash mount for my iPhone and use Waze for traffic and Infiniti personal assistant for any re routes.
Been working for me.
I am starting to agree on the traffic being useless too. The last few days it has been m ore of an annoyance than anything.
On a slightly similar note, my wife who has a 15 Q50 and I where about 50 miles from home at an unfamiliar destination. We both pushed home on our our nav to take us home and we both got different routes. We were parked next to each other when we hit home. I thought that was a bit strange.