Personally it depends on the gear you have.
I finally came to the conclusion today that even though there are some tempting items to pick up, my gear is holding up just fine as is so far. I'm going to stockpile my Frosts till I find my gear to be lacking and then re-evaluate what to buy based on how many I have (and whats dropped for me so far).
I talked with the other classes that share my token and they seem to be a bit more excited about theirs, so for the time being I pass to them.
The Tier gear is not really stellar, even at the ilvl 264 stage. As you said the regular drops are pretty close. I find it hard to give in to the threat bonus of 2pc considering how threat is not really an issue (for me at least). The 4pc may indeed be very useful in 25 man hard modes but that remains to be seen at this time.
There is something so appealing about backhanding someone across the face with a shield.