I don't have any yet, but I do have several Systainer Midi's of the previous generation. I the systainer³ L 's play well with both the midi and the regular systainer³ I might get some. (I have my doorplaner in a midi, a lamello tanga delta that came in a midi, and a 1400w makita variable speed angle grinder fitted with a dustshroud for concrete sanding) the midi and the sys³ only work one way.
I saw one with handtool-inserts that looked interesting, but they weren't in stock, and with an unknown, but presumably long deliverytime.