Put launcher pro on my droid X, never seen or used 2.2. Loaded froyo on my wifes droid and it looks feels just like using launcher pro.
It's a bit different.
On 2.2...
Can you change the dock apps?
Do the dock apps scroll?
Do the dock apps have swipe up gesture function?
Misc contact, calendar, SMS, Bookmark Widgets?
Depends what yas needs... LP is a pretty cool launcher, about the best I've seen. If ya want one that is.