I installed it using the rooted / flashing method and had lots of force close errors. I also couldn't top up the pre-paid card. The transaction just wouldn't go through (tried two different cards). I also had other problems with Android attempting to update apps every time it started.
While looking for an answer to those problems the APK was released. I flashed back to stock, unlocked the bootloader and installed the APK. I could top up the card and I tried it at a store yesterday.
Everything went smooth and the cashier seemed to be familiar with the process.
I just woke the phone, held it to the card reader, the card reader beeped, the phone asked for my PIN, I held it to the reader again (but it didn't take), I held it closer and longer and it beeped a second time. The cashier said "looks like it read it that time" "do you want a receipt?"
I said no thanks and left with 3 or 4 people behind me staring in amazement / bewilderment.
I really like GW. But I don't see myself topping off the card very often just to play with service. If it could pull from my every day card then I would use it as often as possible. Also if more places around here took Wallet as a payment I would use it more. But as it stands I'm limited to Home Depot, McDonald's, and some gas stations. And I can only use the service at the gas stations if I'm paying inside. I normally don't see the inside of those places more then once every month or longer. But here's to hoping that more places in my area get on board the service and more cards can be used with the service.