I Still use these same style shoes in the gym, I love them.  The fit is very snug, good for exercising and all gym activities.  Excellent for treadmill, and I even use them when doing squats and deadlifts.
Quality is top notch, Reebok makes a good product.  I have been using these almost a year now and they are still in great shape (I only wear them at the gym, nowhere else and not outside).  I have not been doing as much running this past year though or I bet they would be wore out long ago.  This past year has been mainly weight training.