What are you trying to accomplish?

First of all, I have no experience with these tools so that's where I'm coming from. I'm a believer in buying bike specific tools as you need them and I'm a believer in doing my bike tuning and repairs at home. When I ride I generally just carry enough stuff to fix a flat tire or two and a good attitude regarding anything else that may occur. I have no interest in carrying a bunch of even light weight tools with me.

Secondly, How to you visualize yourself using these tools? Take the cassette lock ring tool, for instance. You'll still need a chain whip if you plan on removing a lock ring and, if you have torqued the lock ring anywhere close to the 30 ft/lb spec, I doubt you'll be able to twist it off with just your fingers anyway.