You can successfully make interlocking parts with a FL2. The issue is modeling the correct clearances between all possible contact points.
I have made hinged pieces that rotate about a shaft and other movable pieces that look as though perfectly connected but not. No breakaway is needed as the supports keep the parts in proper locations and separated. Once the supports are removed you have an interlocking parts.
Pangolins are no exception BUT you need to be certain that the required clearance is found at all parts of the scales.
The clearance works out to 0.02 inches.