I have the navy crepe wool Camoshita blazer in 48 and I wear the Eidos field jacket in 48 (though I also fit in a 46 as the two sizes have the same shoulder width). I've never tried an Eidos blazer. Not sure if this helps.
The Camo blazer is short in length, though. If you're short like me (around 5'7") then you should be fine.