I am 2 weeks into snowboarding and after a beginner all-mountain board..
Looking to do free ride & carving on the mountain, no tricks or whatever yet
Would a lib tech skate banana be suitable for me as a beginner?
The Lib-Tech Skate Banana is a park board and is pretty noodley (especially for an all-mountain board).
What you're going to want to look for is a board that has a form of hybrid camber or VERY mild rocker. You can also get a camber board (that's what most of us learned on), but APPARENTLY learning proper form isn't important anymore...
(only kidding, only kidding,
If you could give us your budget, that'd be great. Also keep in mind that you'll want to spend as much as necessary to get comfortable boots.
Here's some things you can look at in the meantime...
NeverSummer. Their R&C tech is proven and well loved on this forum. If you want something that's only for freeriding and you can grow into, look at the Raptor or Premier. They might be a bit much originally, but you'll love them once you get better. The SL might be worth looking into if you want something that's more playful. They also all have Vario Grip, which could help if you ever hit ice.
K2: the Raygun is supposed to be a poor man's Turbo Dream. Don't let that deter you though, BA really seemed to love that board and it seems great for the price from what I've read/heard. The Turbo Dream would be a good choice as well if you have the money. It's not a crazy enough amount of rocker to make groomer miserable, but if you ever hit powder it'll handle that as well.
Ride: Highlife. Supposed to be a good all-mountain board. BA has a review I believe. Keep in mind that Ride never uses anything similar to Lib-Tech's magnatraction or NS's Vario Grip. Smooth Side, Smooth Ride. (Your mileage may vary, but I actually like it to be honest)
Burton has the Custom with normal camber which will be great for groomer and carving. Unfortunately, you're gonna lose a little bit of performance in the powder due to its cambered design (not that you can't get over that, it's not like powder riding came AFTER rocker...) Not sure if the Camber has it, but Burton has their own tech that's similar (in application) to magnatraction.