Is the blade on the multi tool not enough?
No! They are usable but there are much better choices out there. My LM Super Tool is a great piece of kit but it will never replace a good pocketknife or a good small sheath knife for most jobs. I almost never carry less than two and usually have three or four if you count the toys on my key chain. Oh and that does not count what ever is in the pack I am carrying at the time. That might be excessive but I am rarely caught without something that will work.