My experience with rocker had mostly centered around Volkl skis. Finally got to demo a bunch of other brands the last 2 days and I came away very unimpressed with most of them. I now see why some people have such a negative reaction to rocker - some of these skis are crap in anything other than powder.
Let's start at the top - feel free to disagree! All were tested on Snowbird hardpack/bumps(no fresh snow)
Volkls ELP profile: No camber, very gradual rocker the full length of the ski. I'm used to the feel of this and I still feel like its leagues ahead of what everyone else is doing. The best examples here, Katana and Bridge, are combine ski characteristics that almost defy physics (hyperbole I know). They carve amazingly well when you want and yet you can smear and pivot on demand. Stable, tips don't flap, and they have big sweet spots.
Even though they have zero camber and full rocker these actually ski the most like traditional skis IMO. Doesn't make sense right?
Camber underfoot + rockered tip/tail (Rossi, Atomic, Dynastar, Salomon, etc): Whether or not these skis are any good seems to completely depend on the shape of the ski (5 point or not, amount of sidecut, where it's distributed). The S7 and Super 7 were less versatile than I was expecting. They feel like they have no tail, but it holds an OK edge on hardpack despite that. The turn shape they make is extremely funky, it hooks up at the start of the turn but it wants to just drop out the bottom (because theres no tail to finish the turn). Despite feel like they had no tail on hardpack the tails were constantly getting hung up in bumps. I'd probably adapt to them in time, but ugh. The Salomon Shogun had a loose feel but it was about the worst carver of the day with close to zero edge hold. The standout here was actually the Rossi S3. It carves round turns and will still release and smear pretty well. Stable, huge sweet spot. It deserves the hype that the S7 gets.
I think approach works too, but it's a step down in versatility from the Volkls. I don't really think that small section of camber underfoot is really doing much because the Volkls were just as good if not better on hardpack without it.
Early rise tip (K2, Dynastar, etc): Ugh. While this seems like the "safest" and least extreme of all the new skis they actually felt the worst. The Dynastar Sultan 94 and Salomon Sentinel skied like traditional skis with mushy tips. That tiny bit of extra float that early rise tip generates in powder isn't worth what it does to the skis. The Rossi S3 is a way more fun ski in that width category anyway. The more extreme version of this class - the K2 Obsethed - was downright scary at speed. The tips were flapping about a foot off the snow.
I'm NOT a fan of early rise with the rest of the ski traditional. The whole ski just doesn't feel balanced anymore. I have a feeling these skis are one of the reasons why a lot of people got a bad initial impression of rocker.