Cons:Not easily hot-swappable. Internal hardware not of very good quality.
Good, compact design... but seems to have a couple of problems. After owning for 6 months, here's the verdict:
80% of the time, hot swapping the mouse into my laptop will not work. If you unplug it, plan to leave it unplugged - it seems not to communicate with your computer very well when you plug it into a running machine. Can usually get it to work after a few tries though.
The left mouse switch wore out around the 5-month period... had to disassemble the mouse and put in a new switch to get it to work again (not a very high-quality switch).
Cord was more durable than expected - outlasted the switch.