If I were you, I would want to make sure the cost savings would offset the expense and weight. If so, then go for it.
There is a car dealer here in town that is a huge collector of antique cars. He used to travel to car shows all over the country (and maybe still does). At one of his dealerships several years ago, I noticed a custom 3500 Chevy diesel dually crew cab with 3 doors on each side, and saddle tanks slung down both sides.
I asked the salesman about it. It was the owner's truck for attending car shows around the country. He said it would go coast to coast without stopping for fuel. He didn't care about the expense, but that is an extreme example. I would have to see a real benefit to do it.
