2010 brigades now have the same liner locks as salomons high end boots. It's a decent, sturdy lock that will stay in place if you do it right (roll liner lace completely onto pull tab, stuff tab deep in tongue pocket)
Older brigades had a very flimsy liner lace "lock" that was entirely separate from the liner...the shells also had a crappy first gen version of "speed powerlace" that never stayed tight
Even if your liner lock breaks, shouldn't matter too much till you get it fixed. If your boot shell is locked tight, the liner isn't moving (could be an issue with standard laces, though).