Not really for serious wheeling, unless you go out right after some heavy rain and play in the washes. I haven't tried to get a flared 80 through the squeeze; but I agree, damage would be a given. Still a lot of great things to see though.
I spend more time wheeling on BLM then going to parks. Their roads are far less maintained.
My buddy took a deflared 80 through the squeeze, and it almost got stuck between the rocks. Damage to both sides of the vehicle down both sides. I unfortunately do not have the after photos as I felt too bad. That whole trail down to Fish Creek is actually pretty fun. I had a 4Runner at the time and it barely fit. This was in 2009 I believe and with gas prices so high the 80's were like a dime a dozen. ha