Jailbreaking is not a grey area, it's now perfectly legal. And the problem is that with this leak, Apple will release a patch a lot sooner. And with current lack of iPad 2 on store shelves (they sell out within 2 hours of delivery in my area), all new future iPads will have a patch on them, giving jailbreaking ability to less people than it would initially. While current iPad users are safe, if Apple were to release a patch in the next few days, you can bet your bottom dollar that iPads that will ship in the next few weeks will have patch on them. That's the problem that many people here are afraid of.
I guess it's time to buy iPads now, before it's too late.