Pros :
Usually sturdier - they require more force to shatter, and can be sharpened several times more.
Larger perceived balance point, and as a result, easier grip production.
Will (in theory) cut better in thrusts or piercing strikes.
Cons :
Heavier.
Harder to conceal.
May be uncomfortable for those with small hands.
Require more metal (moderately more expensive).
Are usually looked at less kindly by police/coworkers.