This pen knife not very practical as far as pen knifes go. It is not the type of pen knife you would take camping, fishing, use to cut string, whittle wood or really cut anything apart from perhaps paper or cello-tape.
The pen knife is, however, remarkably compact. It is only a few millimeters thick and will easily fit into a credit card slot in a wallet. The scissors work well for there size and the other additions - such as screw driver or tweezers - are good for fixing perhaps small electronics.
The pen knife seems more for office use than anything. It has a small pen - among various other standard additions - which would be good for those who like to do the crossword on the train but never have a pen.
If you like gadgets then this would be a perfect little buy, but if you want a pen-knife for demanding or practical use such as a camping/hunting/fishing holiday, I would probably recommend one of the full multi-tools. This pen knife really would not be able to cut it. (Couldn't resist it)...