I have the Husqvarna Stitch Mover....I've taken it out of the box once, tried it and put it back...Basically the mover just gives you more of a grip of framed fabric to move but unless you have really practiced and gotten your movement down its really no more help with just moving the fabric free of a frame.
I've heard from friends who have the regulator and again are not impressed...and it's costly....I'd advise just keep practicing free form...and ave yourself some money.