Total supply is like 450,000,000 so it may not be as undervalued. Also remember that this project has been on development for ages. We were supposed to get the final Safecoin transition and finally be able to hold coins locally.
As far as I know local wallets don't even exist yet so basically you have to rely on Poloniex to hold which is stupid.
You can store Maidsafecoin in a Bitcoin address. I still have mine from the crowdsale in a paper wallet.