This only make sense after the IPO closes and prior to the SIM software ready with main-net SIMCoins. And if there is considerable time in between these two events.
Yes, there will be a "considerable time" between the end of the IPO and production wallets, because we will be using Test Net with monopoly money first.
But there will be a real exchange in just a few weeks after the IPO, where you can deposit/withdraw BTC and trade with comfort of a centralized solution.
So NXT AE seems like a lot of work for not much return...