Newbie here, may I ask which tires, disc brake rotors and which pedals did you install?
My brakes (also XT in the E+1) are often noisy when wet or after heating a bit - way noisier than the ones on the Stance E+ (same SLX 203mm rotor, but MT420 4 piston calipers, never really made any noise in any condition - only for a couple of seconds when first getting wet). I went through the bed-in process "properly" (as much as I know) on both bikes. I'm thinking of switching the rotors and/or brake
I got the DMR Vault Brendog pedals on mine, don't look nearly as slick as the ones in your photo and I'm not ecstatic with the grip either (using 5/10 rubber, they're okay - replaced all the pins with the included Moto X ones -, but I'm left with the impression that the Crankbrothers Stamp 2 I have on the Stance E+ dig better in the soles). Someday I'll try clip-ins