It is probably a question of how you define "Roam Seamlessly" and whether you are only going to use it for Data. If I move my laptop from one AP to another AP it appears to move seamlessly without a disconnection however if I am having a converstion over VOIP whilst moving, the connection disconnects while the transition from one AP to another takes place. This is supposed to be resolved with 802.11r with the original connection being maintained until the new connection has taken place and there will be no disconnection with the "Network".