Been gigging BF cabs for a good while now (maybe 50-75 gigs?) along with other cabs, and no issues with construction or durability. Perhaps because they're very easy to move and place they don't get bashed about like heavier stuff...
On the schlepping front, yeah, we all pitch in from van to venue and vice versa, but I don't get picked up by the van, or get dropped off, so I load meself from home to car and vice versa, and that's where the weight is priceless, especially, as Lozz says, at 2am in the rain.
We changed PA from huuuuge Mackies to some RCF tops and subs, and that was a relief, too. The easier the load-in and out, the more time for soundchecking and the important stuff.
We had the teenage son of a friend offer to roadie for us recently...he lasted one gig... :/