I tried them only when I played ToEE for the first few times and had no idea what RPG even means. Never finished those runs due to lack of game understanding at that time. Their stats are so horrible, I think it's almost impossible to make PCs worse than pre-generated ones (unless if you're role-playing iron mode and getting super unlucky). Though it's not that challenging to complete a run using them if you're an experinced ToEE player.
Thanks. That was my impression when I was playing the game but thought I would ask others their opinions.