Only been there the once. We climbed Spiegels Overhang as one of my first trad leads last year. It was fun and a bit of an adventure. The climb itself is ok. As you'd expect for the grade it was very very cruisey climbing. The walk in isn't too bad - you're on the tourist track for much of it then a steepish goat track for the last bit. We rapped off rather than deal with the prickly walk off. The rap is fine (you need two ropes) as there are rings at halfway although with the low angle of the wall and a fair bit of vegetation on it the chances of ropes getting stuck is fairly high. Ours didn't, but it was on my mind.
Whilst the rock is low angle, from memory I wouldn't really describe the climbing as slabby. I recall lots and lots of features and more gear than you can shake a stick at.