linen-cotton mix wrinkles slightly less than pure linen. but still wrinkle plenty. and the weight/density of the fabric has a major effect, too, not just the composition; a heavy irish linen could wear equivalent to a lightweight l-c blend.
as far as comfort, in tropical climates like south and southeast asia, no clothing fabric is of any help. they are all intolerable. the reason i like the linen is simply for its interesting texture.