I personally know the owners of 2 2gr swapped mk2 MR2, for them it makes a lot more sense. The 3sgte weighs significantly more and produces less power. With the 2gr, it's lighter and because of the lower compression, you dont even need to put premium fuel in.
but for the celica I think it'd be too much weight for the front end.
on another note, the 2gr is probably more accessible from venzas, rx350s, and camrys rather than trying to source an evora engine.