TB has clip, in case you didn't know. Press C and draw a line with 2-3 points.
And I'm pretty sure it's ctrl+right click on a selected brush to duplicate+drag.
Vertex mode is alright, but I also find myself preferring clip when I'm angling brushes. At least for simple operations, that is. When I'm "trisouping" or whatever it's called I use vertex mode, even if all the little points can be a bit hard to make out from one another...
Eeek!