I was in the group with the 'cross rider. He had been talking about riding his bike out there for a while. He had so much fun that he has been talking about riding it at Alafia!
We rode SST, Lower and Upper Loch Ness, Randy's Trail, Gator Pit, Golf Cart, Canyon, North and South Abyss, Pandemonium (Far Right Option), Sidewinder, Swamp Thing, Ridgeline, Garry's Loop, Woods, East Meadow, Spur, Spider Berm, West Meadow, and Baby Nessie. One of the guys in our group dubbed the cx bike, the "Meadows Slayer" because we got dropped out there
Anyway, the only two issues he mentioned were:
1. Inability to shift on the rough stuff because his shifters are on the down tube. He basically just figured out the right gear and pretended he was riding a single speed.
2. His forearms were sore by the end of the ride - rigid fork and riding the hoods.
Otherwise, he had no problem in the sand - I would imagine this would be excellent practice as 'cross course designers usually like to throw whatever they can at you (especially mud).