Ok i see brushes the go like this
_
_/
But all i can get is this
|_
E for the edge tool.
V for the vertex tool.
Drag the points about.
But you can’t make the brush into a concave shape, so the v and e tools seem limiting.
Another useful trick:
hold ctrl and left click (and hold) just past the end of the brush, you can now move the ends around, just as if you were to manually edit both end edges 
Cool!!
Thanks for the tip damocles. :drink:
You can also move 2 or more faces at the same time.
Select both brushes, make sure the faces are along the same plane lined up. Then they move together. 
For tricky movement of the brush in more than 1 axis (CTRL+left Click drag method) use the 3D window instead of the 2D window.
Sock
:moo: