NBA league pass mobile on iphone 4?

Does anyone with nba league pass mobile that uses an iphone 4/4s to watch games know if or knows someone that has tried to use the apple av adapter to connect it to a hdtv and display the games thru the tv? Wondering if this would work site says it mirrors anything on your screen… Just seems to easy nba league pass mobile $50 apple av adapter $40… $90 total plus tax… Nba league pass thru my cable $180… Wondering if the adapter would work with league pass mobile?

Link to adapter if you never seen or heard of it…
http://store.apple.com/...av-adapter

The adapter should work the quality won't be HD though its not that great. And whoever is on cable in your area won't be available, which might suck if you don't have cable.