My mom always did it in the pressure cooker and it was always falling apart tender. She would then make a wonderful gravy in the pot with the leavings, and served with mashed potatoes. Mmmmmmmm ..... Personally, I'd make it that way - I've never had a lot of success with my crockpot. It always seems to come out bland and not very tender for me.
Life is either a daring adventure, or nothing. To keep our faces toward change and behave like free spirits in the presence of fate is strength undefeatable.