So like the Apple cases with the exposed bottoms? I also kept going back to the Caudabe Sheath.
I tried out the Solidsuit and the Pitaka. The Pitaka is barely a case and more like a shell for looks, so that was returned. The Solidsuit was a complete let down. It's not very nice to hold, slippery like a bar of soap, the carbon fiber sticker looks and feel cheap, as does the plain version with no sticker(yes i tried both). The rubber coating on the seam on the inside started to wear away, just like the recent Amazon review said. Basically i find the Solidsuit to be a PC bumper enclosed in proprietary rubber /TPU case. It's super tight because of the PC bumper. I'm sure it can take a beating...and with the slippery sides, probably needs to be able to, so those were returned too. I didn't bother trying the Mous, it looks very clumsy and thick, as reported.
So for the hell of it, I picked up the Evutec Karbon Aer at Target to check out. I had one for my iPhone 7 Plus and it was nice, used it as a travel case for Europe last summer, but I also kept going back to the Sheath for the 7 Plus because the Aer just felt much thicker compared to Sheath. With the X, the Sheath and Karbon Aer versions are the about the same size with the Aer being 1mm thicker width and length wise. They are the same height wise, so basically the phone is the same thinness with either case on. My goal was to stick with one case and I thought it was the Sheath(preordered it before the X was released) since it was the one I kept going back to for the 7Plus, but I'm sticking to the Aer now. The Aer is almost like a hybrid of the Pitaka(same Aramid material) and Sheath, although it is missing the awesome grippy texture of the Sheath's sides.