I just looked at those things online...they look even shittier than I thought they would. How can you make a creek shoe solely out of neoprene with one nylon strap. Guaranteed to self destruct on any self respecting hike in creek, and they have the audacity to charge $70 bucks. Seriously, do yourself a favor, and get a decent pair of sneakers. They drain, they last, they're light, etc. If you're wearing a drysuit, you don't need a warm river shoe. If you aren't in a dry suit, and you're worried about cold, get some neoprene socks and size your footwear accordingly. And if you want something fancy, at least go with something tried and true:
Five Ten | Savant
Five Ten | Canyoneer
The 5.10 water tennies look sweet, but just by looking at the picture my impression is that they look a bit flimsy. But, since I am also in the market for a new pair this season, I'll have to get them on my feet before I make a decision on their quality. But, I've never been disappointed by any 5.10 products.