I personally did not like the park multi tool I have, it may be different from what you were looking at. The tool lengths are short. One of the hex sizes is a bit that fits on top of another hex tool, so you can easily lose it, the reason to get a multi tool is too keep all the tools in one place so you cannot drop or lose them while repairing something. Because of their size there may be bolts like on the seatpost your particular multi tool will not work well with.
2000 Montague CX, I do not recommend it, but still ride it.
Strida 3, I recommend it for rides < 10mi wo steep hills.
2006 Rowbike 720 Sport, I recommend it as an exercise bike.
1996 Birdy, Recommend.
Wieleder CARiBIKE (folding), decent frame.