The problem I have with multi tools is they always have tools I don't need or want to carry. I don't have any phillips or flat head screws anywhere or 2 or 2.5 mm allens and I don't want to carry a chain tool.
By the time I eliminate the tools I don't want, I'm better off just wrapping the few individuals I need in a scrap of t-shirt and stuffing it in my keg or seat bag. I get the benefit of a bit of rag to wipe my fingers with should the need arise.
-Kedosto