If you're talking about the gauge JPM Coachworks gauge cover, I bought the Alcantara version and it's great. I looks and feels really good, but best of all it all but eliminates the glare reflecting off the dash onto the windshield above the steering wheel.
Yeah, I discovered the 15% sale today by chance. I was looking to buy the Alcantara knee pads. Went to the FT86 SpeedFactory site, and almost pulled the trigger, then for some strange unknown reason, I went to the JPM site and discovered the sale!

Because of the sale, I decided to buy both the knee pads and speaker covers in alcantara. Saved about $28 (SpeedFactory doesn't charge shipping over $250, JPM does).
It's going to take a little longer 10-15 days estimate, but I wanted the parts anyway, and being able to save some cash is a bonus.