It is big, long and bulky, there is no arguing here, but it's not THAT heavy unless you really load it. My loaded touring bike was 100lbs

I was concerned with the BD's size for a long time too. But I decided to take the plunge anyway. I wanted the extra cargo carrying ability and better ride quality. I will keep my current commuter untouched so I have a regular, short bike as a backup that can also carry some cargo, for the errands where the BD might be too long.
Although the BD is shorter than my MTB with a trailer attached.
My current bike is also a pain in the butt to maneuver with a trailer attached. And I broke off one of the rackmount eyelets on my touring bike on my first long tour so I figured that a longtail is the way to go for me. I like to carry stuff, I don't mind the weight but I want a bike that I can trust with the cargo. I've measured the elevators and storage space at work a long time ago, it'll fit!
I'm only a couple of weeks away from finishing it. If it rides like people say it does it'll seal the deal
But I live on a ground floor of a small house, my way in and out is straight through. If I lived in an apartment where I lived before the BD will be simply out of question.
BTW, unless something changes drastically, the Troll is next on my list. I will probably swap the frame on my MTB commuter with it and upgrade it a bit.