If you refer to Route05 via South Luangwa and via the Muchinga escarpment pass then I would be cautious. I received word this morning that the pass was opened or improved again, but there are some tight turns and reversing with a trailer will be problematic. I suppose coming down will be easier. But it may make for a good fireside story afterwards.
Cutting trees in the area is a big no-no. Some groups tried this to create space and was promptly stopped by the locals.
Having said this, there would help at hand if you are really in a tight spot.
I am asking the tour guide that contacted me to give his opinion and will revert.