Been using firm tofu in my saag paneer for years, the texture is near identical to dairy paneer, and the flavour in the curry is enough that a dairy paneer doesn’t add anything that tofu doesn’t.

It’s the only vegan food I can easily get my non-vegan friends to eat, it took some convincing to have them try it (why are meat eaters so afraid to taste something without meat in it? They’d be scared of an apple if I dared to remind them it’s vegan) even they agree tofu and paneer are virtually indistinguishable in dishes like palak and saag curry.