[QUOTE=tinkergnome, post:11, topic:401203]
I bought the Slingbag version back in May, really excited to use it.
Pro: Super comfortable, stayed easily on my shoulder when walking around.
Pro: Lots of pockets! I carried my laptop, iPad, xBox Game controller (for Steam games), my mouse, a Bluetooth keyboard for the iPad, and a laptop charger, plus odds and ends. I crammed that baby full, so I know the other, bigger bags, like the Messenger, can carry a lot.
Pro: Pass-thru charging - nice capability. Meant I didn’t have to get out my mini power strip, except for the laptop.
CON: The battery to charge while everything was in the bag? It would never keep a charge. I didn’t want to go home every night and just have to plug it back in and make sure it was keeping full. I contacted the company about how to buy extra power cables, figured why not? just keep one plugged in at home, one plugged in at work, and when I get those places, plug in the bag - but it’s not available to buy extra power cables.
I have an iGeek charger - I can go months without using that badboy and pick it up to charge my phone and it’s still full.
BIG CON: I bought the bag in March…the battery completely died in May. I actually got to use it’s c charging powers out in the field maybe once? Every other time I went to use it, the battery was dead. And I had considered multiple times before then to just buy an extra battery…but the battery alone, via their website, costs more than what I paid for the entire bag on Woot! 
So, I still continued to use the bag for a while - it IS comfortable and easy to use…but then I recently got a 2nd USB monitor for my laptop, and it doesn’t fit easily in the bag with the laptop, even though I cleaned some things out, so I had to change things out. I’m using an old Messenger bag from college…and just not sure I want to give these guys another chance with these bags.
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Slingbag is a different product, not another “version”. This one has a slot so you can exchange batteries. Buy a few extra batteries from the manufacturer, keep them charged and you’re good for weeks or months.