No, Misc. Robots and R++ additions cannot haul to inventory.

Originally posted by Pick Up and Haul Workshop page:

Only player-owned humanlikes can use their inventory to haul. Rule of thumb: If you can order it to equip a gun or wear a pair of pants, it'll use their inventory to haul for you. No guests, animals pretending to be robots, dogs, prisoners, or whatever else.

Unfortunately, animals pretending to be robots is pretty much exactly what Misc. Robots are. A compatibility patch is theoretically possible, but currently outside of my capability. As such, the functionality of the robots will be completely unchanged by the addition of Pick Up and Haul.