I'm tempted to get this. As much as the back is ugly, I had a Seidio 2600 battery for my Pre and I loved having the ability to do whatever I wanted without having to worry about battery life.
They claim it has 87% more battery life than the stock battery. Sadly, the new back door that comes with it is not the best looking but that's just my opinion.
Are you willing sacrifice the look of your Droid to gain some battery time?
All I can say is :Wow! Really?
That thing looks like a scotch tape dispenser!
I think I'd rather just bring my charger with me when I know I'll be needing a charge, and suck it up.
That thing be fugly!
That's what I have. It came with another micro sd wall plug, so it ended up being a really great deal. With another standard batter and wall charger, my phone is never plugged in. It's amazing how much more convenient that can be.