For one it's much cheaper (about $6 for big tube) and it states that it never dries.
Things would have moved faster but putting the top plates we ran into couple problems that did slow down the progress but all together it was about 10 hrs to complete (that includes few breaks ;) )
Time spent: 10 hrs
Cost: ~ $150 (included 2x4, roll of moisture barrier paper, tape, and 100 pack of concrete screws.