For studio work it should be great I'd have thought, but I know you do landscapes too. That being said you won't miss what you've never had It will be interesting to see how if fairs against the 5D3, if anyone does a direct comparison for courseIt's currently selling for £1480 on Panamoz. I've been waiting to see what this camera was gonna offer and I have to say that I'm very disappointed. I would look at it at £1300, since I have a few Canon lenses already. However, Panamoz are also selling the 5dmk3 for £1575 and even the 5dmk4 for £2300.
I honestly think you'll be impressed with the 6D-II, it's just a difficult decision when you know there's better (in a number of areas) for less money. £1480 should be the UK price imo.