I used a heavy duty tile adhesive, if I remember correctly the roll was 12" wide and resembles 3-M heavy duty two sided tape.
I used traditional grout on the joints and matching latex calk where the tile meets the counter and wall.
We currently have 15,000 miles on our Cruiser and there are no visible cracks in the grout joints or tile.
I'm not a professional contractor...........actually I'm a Cheese maker
I think it looks good but the job is not perfect and I would not want to tell you it will never crack, it will be interesting to see how it holds up after years of use?