Yes, with the 33x44 sensor you'd be able to rise a bit with the 40mm....but only rise...no shift. Hence, landscape mode for the MFDB...not portrait.
Stitching without a sliding back is always problematic for focus, so I'd check focus for each shot. Using camera-shift and/or -rise to stitch, requires patience and planning.
"Wide" is such a matter of personal taste...some like it "hot"...some like it "not." Those preferring wider might seek other alternatives.
Enjoy!
Cheers,
Hank