In reply to fire_munki:
I don't know how much difference there is between cams and tricams (if any), but I reckon a more significant variable is where exactly the placement is. A deep placement behind a thick part of the flake is far less likely to lever it off than a shallow one behind a thin, projecting flake edge.
Although there's a case for considering the type of gear used, to my mind more important questions are: Does the flake look fragile? Do I really need that particular runner? Are alternatives available?