I've never used this, but I'm just not a fan of bleeding brakes with vacuum. This gadget might be handy when bleeding a clutch or some other unusual situation. It might work okay for flushing, but I'm a little leary about it getting all the air out of a modern ABS system that has been opened and has lots of air.

For all I know it might work great, but I would have to reserve judgement.

I prefer good ol' two man brake bleeding, but I often use a pressure bleeder because there never seems to be a helper available when I need one.

Good luck,