The router mode and matrix routing in llama.cpp is still early days and it can't easily juggle multiple models as easily as llama-swap so there's still benefits

The router mode and matrix routing in llama.cpp is still early days and it can't easily juggle multiple models as easily as llama-swap so there's still benefits if you're using 24-32GB cards that can run multiple models simultaneously. The gulf is quickly shrinking though and it seems like the need for llama-swap will disappear soon.