Arduino Ibt_2 H-Bridge

I'm curious if anyone has used the Arduino IBT_2 Motor Controller with EZBv4

It looks like I share the ground, can power the motors with my 6 vdc SLA bat attached to Vcc, attach R_EN and L_EN to each other and to 5.5v, then use RPWM and LPWM on digital out ports to control Fwd/Rvs movement of the motors.

Any experiences with any of this?

Thanks! Stephen