Leather back case

I'm thinking of getting a leather back when the moto x style gets released in UK but not sure if I'll like the bumper case that comes with the phone, as I've never used one before.

If I don't like it I'll need to buy a normal phone case but want to know if putting one on will damage the leather in anyway?

I had the G4 when it first came out and remember that at the start there weren't much case options if you chose to have a leather back. Is this the same with the moto x?

Concerns about the new Leather style

I skipped the 2014 Moto X, planning on upgrading this year to the 2015 Moto X Pure. I've been looking forward to purchasing a leather back option, but I'm just noticing this year's version has different leather. It's textured "saffiano leather" from what I've seen on Android Police and other sites. I'm concerned this leather looks fake and plastic-y. I'd love to hear what other XDA users think, still decent looking leather, soft and not face looking? Thanks!

Leather back and cell signal reception loss

Has anyone noticed that the leather back seems to attenuate cell phone signal strength?

I was able to use signal test pro and found with the leather back on I would hover around -110 db and with the back plate off, I'd hover around -100 to -95 db. This is with no case in the exact same location. Alternating between the leather back and no back plate routinely altered signal strength by 10db on a Sprint LG G4 on LTE band 25 and band 41

Anyone else notice this or can replicate this? Does the plastic back also display this characteristic?