I won a faction frigate in a corp contest / lottery and I picked the Worm as my ship of choice because I love the Merlin hull and have both Caldari Frigate and Gallente Frigate to V.
As I set out to decide how to fit the ship, it quickly became apparent that this is like a Ishkur as they both have the same drone bay size (50m3) and bandwidth (25 mB). As the fitting progressed, it became apparent that while sharing some characteristics, they are very different.
Here is my standard Ishkur setup.
Here is a corresponding Worm setup I investigated.
I also played around with a shield boosting version like what is found in some Harpies and Hawks. It has a nice active tank but is very cap intensive even with the cap booster there.
Finally I played with a pure tanking ship with no electronic warfare whatsoever.