I am not sure about the fit when comparing it to the SAK classic in my mini-kit tin can. The micra fits in the identical spot/space as the SAK CLASSIC. I agree with enough room in the world for both...I own both.
I would personally carry the Micra in place of the SAK CLASSIC...in my mini-kits. It obviously does not replace all SAK. But if you really need a scissor and need that limited assortment of tools like that found in the CLASSIC and Micra, the Micra has by far the better and more functional scissors and does have MORE quality tools. In that class of tools and application range, Micra is superior...just my opinion.