Yeah, it's very addictive. I am on Day 87 of a Veteran/Veteran/Hardcore run, the deepest I've gotten into BB yet. Lost a lot of dudes to get there (damn RNG), but my current squad is pretty good (at least for my noob level of game knowledge and skill). All dudes I've bought from level one as farmhands or millers or whatever, got one rat-catcher, and leveled up to where now most of them are levels 3-6 with decent metal armor and good weapons/shields. Starting to hold my own against orcs, but obviously this game can wreck you at any given point.
So far, I am going with a sword/board layout for everone up front, and crossbows in the back. With high defense skill and a shield, they do pretty well against most things, though up starting to come up against real heavy armored enemies now, so I am guessing I will have to explore alternate load-outs against those, as one handed weapons don't do much against such armor. Might start buying Greatswords or going with a non-conventional duelist build or something.