Expert, 31, 5'10, 175, average 30 western days over the last 28 years (50-60 days the last 5 years)
I picked up an end-of-life Bushwacker (death by excessive stone grinding, likely a demo ski) for $100 last year and took it out in lots of different conditions. It's actually got great edgehold and I could really mach on it, but it wasn't confidence inspiring at higher speeds. The tip and tail are just too soft. When you push higher speeds, the tip and tail start to disappear and it feels like a smaller ski. Higher edge angles help, but it needs to be a bit stiffer.
The edgehold is certainly enough to handle firm snow technical pitches. I felt pretty comfortable hopping off a 5' cornice onto 45 degree hard snow with about 5' to stop before cheesegrater cliffs.
As for bumps and trees, I think it depends on the type. Badly formed bumps and difficult trees, I think it excels, but if your line allows for more speed, the softer tip isn't good for platforming on and pushing on to control your speed. It isn't supportive enough to really open up with. For most skiers this is just fine (very few ski really fast in trees/bumps), but for, say, the top 10% of regular western skiers (not vacationers), they'll be bothered by it.
I think its a good ski, but the tip and tail need to be more supportive. The Brahma likely fixes that problem. But I think there's room for a better ski in between the Bushwacker and the Brahma. We'll see when I try out a Brahma this year. I think the stiffness of the Kabookie/Bonafide is closer than the Bushwacker/Brahma because there's a .75 lb difference between the Bushwacker/Brahma, and a .5lb difference between the Kabookie/Bonafide. The Bushwacker has almost beginner-ski feeling tips and tails. They neutered it too much. It's funny because, underfoot, the ski is actually pretty stiff. It'd be nice if that continued out progressively in the tips and tails, rather than dropping off rapidly like it does (a hinge-like feeling when skiing in 3d snow).
I bought the ski to test it out as a 8lb spring/summer touring ski for longer missions to pair with TLT5 boots and Dynafits, so the softer tips mesh well with the boot choice. That said, I'd still prefer more stiffness at the extremeties, even with those superlight boots. Again, the cambered section of the ski is actually much stiffer - it's a good moderate-stiff flex. If the entire ski was softer, it might make a little more sense (though, not really, because of the skinnier width, and it's not targeted at beginners).
As for versatility, it actually skis powder really well, if you know what you're doing. Here, I think the softer tips actually help. Here it is on a 1-2' day of cream cheese in late April.
In the second picture, I was leaning back a little more than necessary to create a pretty big margin of error. I blew my ACL 2 months prior and was at high risk of doing more damage if I made a mistake in this kind of snow with a left turn (right ACL). The third photo shows you can certainly attack deep mankier snow with them.Edited by Brian Lindahl - 10/18/13 at 10:26am