My last van was a touring model with underslung axles, it was great with heaps of ground clearance handled no different from when it was standard.
BUT I'll be honest, in my experience when it came time to sell nobody wanted it, plenty came to look but they all walked away wanting either an outback or a standard (Low) touring van.
A funny story from a potential customer who knocked us back, decided that an outback would be better suited to travel along the 4WD tracks he planned to traverse, I was like ohh OK what are you planning to tow it with (thinking he might have had a decent 4WD at home or planning on getting one) his reply: Just this car, pointing at his XC90 Volvo