I can also confirm that LP+ allows the Contact Quick Task widget to be used and resized. I have no need for it so I don't use them, but I did notice that I was able to. Again, you need Launcher Pro Plus, not just Launcher Pro. You need to buy the full version.
The ability to resize widgets was only recently implemented in LP+. The developer originally stated that he wasn't going to bother with the, "non-MotoBlur/Ninjablur/whatever," widgets, but he ended up changing his mind; to an extent. He clearly didn't bother adding them to their fullest extent. I don't remember if he said whether or not he was going to fix any of the resizing bugs.
There is a workaround for the issue of the widgets' sizes automatically resetting upon rebooting. I remember reading about it somewhere here I think, actually. I can't remember what has to be done to do it, but it's not really a big deal to me I guess. I don't particularly like the NinjaBlur widgets. Search around with a couple decent keywords and you can probably find the discussion(s).