I prefer using the offset bracket, as it allows you to get in trees with some lean and maintain a level stand. Its my understanding that you can't use both at same time.
An idea if you want the best of both worlds, as I have made one and it works pretty good (although I dont use it much now because I find they hang easy with a proper linesmans' belt and two free hands). Take a short (6-7ft) length of 3/8" rope and tie a prussic onto it with paracord. Wrap rope around tree (rope has loop tied at one end). Thread the tag end of rope through it's own loop, also bringing the paracord prussic through the loop. Cinch down, then slide prussic down tag end to desired height and attach loop end of prussic knot around the versa button. Stand hangs right there, while hanging, and can still use offset bracket. If your having hard time visualizing what I'm saying, just think about how the lifelines work.