Got my Forza Wireless today after waiting months and months for them to release and I gotta say, rather impressive first impressions. Thought I'd hate the neck strap thing, but it fits well and doesn't move around too much. One thing I found is that I like to wear them over ear, which takes up any slack in the lines. Obviously they are a touch long for a shorter guy like myself (5'9")...but if I wear them over ear, that's gone. That's how I prefer to wear in ear headphones anyway so it works out well.
Sound wise, they are fantastic. The only other wireless in ear I've tried for any amount of time is my daily driver currently the Beats X. Was never that impressed with the X sound wise, but they are really comfortable for gym use. I have a feeling these FW are gonna surpass them. Comfort is about equal and the sound quality is quite a bit more refined and accurate in comparison.