I am fairly confident the answer is no; you don't get to keep . :-(
The rewards are illustrative of how 4E works; the types of rewards you would get from such an adventure. Now if you want to extrapolate that since LFR is an RPGA campaign, and since we are following WotC guidance to use the PHB, DMG, and MM, ..., that is up to you. My lips are sealed for another 18 days.