If it's possible, I would definitely have them removed. Cali has 2 dew claws and it's awful when they get stuck on the carpet, my comforter, her bed, her blankets, etc. She SCREAMS bloody murder. Also, keep in mind that I cut her nails (dew claws included) every week! Once her dew claws are caught on something, it's really tricky to untangle them and it HURTS her.
My poor baby screams so bad sometimes -- it just breaks my heart.