Considering these minis just have plastic, resin, white metal weapons I don't think they will be able chopping, blowing up or slashing other toys. Still toys like Woody, Jessie or Buzz would see the tiny 40k toys as weird at best. Viewing the world in the same way Buzz used to. That their lore is fact instead of them just being toys. It would take awhile for them to come to the realization of what they really are but afterwards I can see them being normal toys banding together. Helping each other survive in the world of their owner/buyer with some discrepancies/disagreements from time to time. I can see the bits box being an important part of a miniature's life as it is like a hospital or upgrade center. Wether the part is plastic, metal, resin, sci-fi, fantasy, historical, steam/any punk, any bit is valuable especially if it's a body part.