Alright so I ended up ordering this and it came in today. Took 20mins to charge from the USB port on my laptop (no idea of battery level it came with).
One thing I noticed is it fits tighter than the original battery. Makes it kinda annoying inserting and removing the battery. The battery doesn't look swollen. Is this normal with Wasabi and aftermarket batteries?
A lot of battery manuf try to maximize the capacity of their batteries, so it doesn't surprise me that they're packing a lot in. This batt has the "disadvantage" of having extra circuitry added internally on top of that. I haven't had any fit issues with my existing 3rd party LP-E17 batts (incl Wasabi), but this is a new design.
You'll have to keep an eye on it and see if it gets any tighter (be sure to report back!) ;-)
R2