Register two bigimages with apply

I am trying to register two bigimages (histology slides that are too big to process in-memory).

I was following this guide Warp Big Image - MATLAB & Simulink (mathworks.com) which gives an good example of applying a transformation by using the "apply" function for bigimages. My problem is that I don't want to just apply a transformation. I also would like to keep the image size and location of my reference image similar to using imwarp with the option 'OutputView' (for the in-memory registration case). Is there a way to alter the example code to get a similar result?

Example for in-memory case:

ortho = imread('westconcordorthophoto.png');
unregistered = rgb2gray(imread('westconcordaerial.png'));
[optimizer,metric] = imregconfig('monomodal');
t = imregtform(unregistered, ortho, 'rigid', optimizer, metric);
Rfixed = imref2d(size(ortho));
registered = imwarp(unregistered,t,'OutputView',Rfixed);
imshowpair(ortho,registered,'blend');

Out of memory case:

bimOrtho = bigimage(ortho);
bimUnregistered = bigimage(unregistered);
%followed by warp big image example code with previous transformation t