In the last few months I have built a few technics vehicles, and perhaps naively thought that the Land Rover would be similar- well, put simply, it's not really. The Land Rover is made up mostly of LEGO, there are technics sections (chassis, steering, outer parts of the body etc), but the rest is normal LEGO.
I enjoyed the build, it wasn't as long as I expected; the first few bags take a while, but after that it's pretty quick. I haven't got a clue why the accessories are in bag 1, they sat on my desk for a few days waiting for the rest of the build to complete so I could place/attach them. being Lego (rather than technics) makes it less fiddly and slightly more intuitive however the end result isn't as stable (I knocked various pieces off several times during build) so less easy to play with. I don't usually track how long it takes to build but I did it quicker than expected, I'm guessing no more than 6-7 hrs of build.
Because there are options on build towards the end you'll end up with spare parts, more than you might expect (if you put the winch on there is nowhere to place the front number plate; they give you 2 rear number plates as well, there are 2 engines)., so be prepared to store.
I liked the outcome, it looks good, I didn't spot any Easter eggs.