As for the bit kit, the MUT has it's own longer bits which are not compatible, and who knows if they intend to release a bit kit for the MUT (I should think so if it's popular enough). I really like the standard bit kit however and it can be purchased at $15 directly from Leatherman.
If you check Leatherman's page on the MUT, they have the standard bit kit listed as a MUT accessory.
Now I'm cornfused.... somebody let me know when we get to the bottom of this