I've been 'toying' with getting a Bamboo (the <
Bamboo Touch, $50> looks to be quite similar but has four programmable buttons...), but I usually wait a few years before making an "impulse" purchase.
The Bamboo
Pen does allow use of fingers/gestures and a pen. However, both/all Bamboo pads are USB powered, so you have one of those unsightly, desktop-cluttering, oh-so-last-Century cable!!!
This could make a good choice, assuming it can handle stylus input. I rather doubt it can, but one may be able to specify the size of the pointer for various apps. OTOH, most graphics apps don't really use the size of the finger when moving the cursor...
Frankly, however, I'm sad to see all these things becoming wireless (even though I've had one iPhone cable almost ruined by cat nibbling!). Apparently, BT can differentiate similar signals form different devices? I still wonder about speed, I'm no typist, but I can hit the same key twice faster than this keyboard can get that message accepted by the iMac. Of course, I have a spel checker so that's beter than slowing down my keyboarding.