Do you have ICS? I never noticed the two before, though I have been using ADW and then GO for so long I might not have even noticed.
Also, since I am probably going to root and unlock the phone, as I did my last two smartphones, wouldn't it be logical to use a google/android stock launcher, since one of the main reasons to root a phone is to get rid of as much Moto and VerizonWireless bloatware as you can. The google/android launcher is, I assume, pure android, while the Moto blur is probably just more glop of the unnecessary Moto bloat.
NOTE: Verizon says they are the only company that has an agreement with Google not to include that nasty little spy app that sends every action, every keystroke, and every text or email you receive to your provider. All other Android-based phones (and Apple iPhones) come with it pre-installed. I wonder sometimes if the reason VW didn't want Google's spyware was because they already had their own buried amidst all that bloatware. I'll have to check on the rooting/hack discussions about just what Moto and VW root apps can safely be burned at the stake...