On MartialTalk there is a [thread on pocket stick usage. It is being disparaged by some and praised by others. Personally, I wouldn't be likely to carry one for its own sake. I've carried kubotans before and find them too bulky compared to their value. While a pocket stick increases the effect of a strike, it also limits the ability to grasp with that hand. It's a net benefit to have the stick, I believe, but not a sufficiently big benefit to justify carrying one. If I'm going to bother carrying something, I'd rather have at least a blade, unless it was restricted (work rules, etc.). On the other hand, I do like to know how to utilize a small flashlight or unopened folder (if there wasn't time enough to open it), etc., just in case. So, I see value in playing with the dulo-dulo on occasion. I prefer striking than the locks, but I do know that one can get some very painful locks with them. Where they really shine is destructions! Some people see the fact that you can't grab as well with a stick in your hand as a big disadvantage. I think if I carried one regularly then I'd want a lanyard or other way of securing it; but even still, while I see the point, it's not a particularly important one to my mind. I can always drop it if it's doing more harm than good! But, I think I can grab well enough with the top two fingers and retain with the lower two, and as it'd like be in my striking, not grabbing, hand, I probably would not be grabbing with it. A grab could be changed to a painful punyo press with the stick instead. As to pens, I see them more as daggers than sticks, so I think of that as an application of knifework.