cavalier obstruction - how successful?

Phudmog

Has anyone tested how often a cavalier steed who is obstructing blocks the egress of a target? Also, what methods of movement (tumble, leap, etc.) go around an obstructing steed?

Xenthos

It's a relatively low chance- I don't have the exact number, but it feels a lot like around a 20%.

Tumble and leap go right by it, it just blocks standard attempts to leave.  It's basically cavalier-carcer for a single target, but even so... it's really nice.  Any chance to keep the target in the room for a warrior is.