Yep done this exact switch and like M_T_B I went back (though it was a bit longer than 2 weeks).
I started running coil Lyriks on my Nicolai Helius AM set in 150mm mode (but the geometry doesn't change when you change the travel settings so you still need a 140-160mm fork.
To save weight I went to a Fox 32 Float 150mm with a 15mm QR. From the point of view of actual damping, the Float's were really very good; they were also really good over rocks (I rode the descent down to Rowarth Mill in the Peak at full tilt on them and was impressed by how well they handled this). But two things really narked me with them. The first is that they were really noodly, scarily so, on landings and heavy compressions. Second is that they were just too short, i.e. the axle to crown height, so it dropped the front end and I found the front wheel kept tucking in on me on steep tight corners. That really pis sed me off so I went back to the Lyriks.