I have the Smart Cover (grey) for my Space Grey iPP 9.7...and go caseless...kind of.
I am currently trying out the Smart Keyboard and I think I'm going to keep it. My kit for my iPad Air 2 was the Logitech Keys to Go, a Twelve South Compass and a Smart Cover with an iCarbons skin on the back and a Zagg Glass on the front...all carried around in an Incase neoprene sleeve.
With my iPP, I have somewhat the same with an iCarbons skin on the back with a Zagg Glass on the front. I still use the Compass in certain situations (when I am referring to content on my iPP and writing speaking notes on my MBP) and I now have the Smart Keyboard. I like the idea of the Smart Keyboard as it allows me to use the keys more often. It's a process to get setup with the Keys to Go, so I think I'll be going this way.
All that said, I wouldn't go without some sort of light protection on the iPP. The iCarbons protects against scratches on the back and the logo still shows (I like that). The Zagg Glass doesn't interfere with the Apple Pencil and I can't tell that it's even there. Unfortunately the new design of the Zagg Glass (I have the older design on my iPP) has their weird home button cutout with the bottom open. The old design had a complete home button cutout that surrounded the button...this makes it look like there's no glass on the screen.
I carry my iPP and it's accessories in a Moko Leather Folio case that's meant for the MacBook. You can find that here:
http://www.amazon.com/MoKo-13-3-Inc...7872&sr=8-2-fkmr0&keywords=Moko+MacBook+folio