Because my HD2 is away getting fixed, I canâ€™t do videos/shots of this in action (which Iâ€™ll do when I get my HD2 back).
Generally, theyâ€™re very useful styli, the longer of the two to me is particularly useful as it can be kept in a jacket pocked with the clip (like a pen) and then used in the hand very comfortably (it feels just like a normal pen really). The smaller of the two I have is to my mind a little too small. I kept losing it in pockets. It does have a loophole for a strap or something, but thatâ€™s just adding to the bulk.
Onto the usage side of thingsâ€¦ In the wonderful crisp weather weâ€™ve got in England, these are very useful with gloves. Theyâ€™re large enough in diameter that they can be gripped well even in things like ski gloves, and would offer a lot more precision than prodding the screen with a gloved finger (if that actually worked).
Many people would love to be able to use these for high precision things like drawing. To a certain extent they do, but I canâ€™t help thinking a more traditional stylus design might be more effective than the dot in the middle of a large circle for more precise taps. Iâ€™m not entirely sure how the technology works, but it must be possible to create a small tip rather than a large base.
The large base also has an interesting side effect, it means you have to hold the stylus at a certain angle to avoid tapping in the wrong place. This can occasionally get annoying, but itâ€™s fairly easy to adapt to.
Using the styli as an extension to a finger rather than a very precise implement makes a little more sense, and makes typing a lot faster (you can see where youâ€™re hitting rather than obscuring the screen with a finger) which makes it very useful in situations with either lots of typing, or hitting small UI elements (which are surprisingly hard to find on the HD2!).
Overall then, I think itâ€™s a useful bit of kit to have, and Iâ€™d certainly recommend one if you want an alternative to fingers (or if you wear gloves), but theyâ€™re not as precise as I feel they could be..