Hey SMASH!!! Good to see you back on the site!
I actually never did get the 'knuckle banging' thing as it relates to cabinet depth. As one who has been schlepping 410's for over a decade now, I have never experienced any correlation between cabinet depth and ease of getting through doors. Almost all 410's are about the same width, and the less than 2" difference in depth between the AE410 and 410UL has zero impact to me regarding doors, etc. (since you would go through a door 'sideways', which keeps your hands safe anyway) The primary advantage to me of a thinner profile like the AE410 and Schroeder 410L is that they will fit in some spaces that full depth 410's will not (smaller back seats and even some smaller trunks).
However, assuming you have an appropriate vehicle if you use one of these larger type cabs, they are all about the same regarding the impact of form factor on moving them about. Weight is a different story though, as has been mentioned above. You can really feel the difference between the 'original' 56 or so pound 410UL and the 64 or so pound AE410. However, both these cabs are 'doable' if you are concerned with weight and also want a cab capable of doing the largest, loudest gigs.
Knuckles.... haven't banged one in over a decade of 410 schlepping