Been using a SwiftPoint GT for years. It's way better than a regular mouse, and it completely demolishes any mouse in its size class (and many that are lots bigger) in terms of accuracy, ergonomics, and functionality.
The SwiftPoint is one of those devices where after you use it, the predecessors that you made do with before will never be good enough ever again. Every time I have to use a regular mouse, it feels like I'm pushing a USB Pet Rock around the desk--huge, heavy, and generally sub-functional. I also invariably tilt a normal mouse to the side and then wonder why the heck my document isn't scrolling, or why the app switcher didn't come up as I try a gesture.
SwiftPoint is not, however, perfect. Its main detractors are a lack of ambidextrous operation, and a lack of jumps slots.
I recently managed to break my SwiftPoint dongle (left it attached to my laptop in the bag, and then jostled it enough that something broke), so now it can charge my Swifty but not connect to it. As a result, I've had to use the secondary Bluetooth pairing to get my mouse to talk to my computer.
That would be alright, mostly, except that I dual-boot Windows and Linux systems, and they have different bluetooth IDs. This means that every time I switch which OS I boot into, I have to go through the hassle of erasing my prior pairings from the SwiftPoint and also my computer's bluetooth device list, then re-connect the SwiftPoint. The process takes about a minute each time, and sometimes I have to do it more than once before things will work right. The hassle is so bad, I caved and ordered a new dongle, and I'm eagerly and impatiently awaiting its arrival.
Lack of jumps is totally normal for bluetooth devices--I have to deal with that on my BT headphones, my SwiftPoint, and it was an ugly and inevitable problem on every folding bluetooth keyboard I ever bought before the TextBlade. You don't realize how amazing jumps are until you've got your hands on the one Bluetooth device that supports six pairing slots at once and can fluidly, naturally, switch between them.