Incubi alternatives

Thinking about building my first dark eldar force.

I am not a huge fan of the incubi models. I don't have the dark elf fantasy army but from looking at the website, it looks like the executioners would make an excellent alternative.

Are they comparable in size? Is this a reasonable substitute?

Executioners look shorter and wider, since they wear full robes but don't have large helmets or those blades on their back, but they are technically the same size.

I've seen someone do that as a 'counts as' before.
They are assuredly comparable in size.

Incubi are my favourite GW models ever. I started Dark Eldar, probably, just because of those models