I use the Incipio Featherlight case and carry it around in a zipper sleeve case. I don't have a screen protector on it. I like the combination of the two.
...
Fellowes PlayBook Static Cling Screen Protector - garbage; it doesn't cover the whole unit so it's hard to slide my finger across smoothly
Yes, I also got a screen cover which doesn't cover the bezel. I much prefer the matt Hip Street one my dh is using, and already bought one to replace this.
When I think I'll be typing a lot (notes, twitterchat, writing) I put on a HipStreet case / keyboard unit. For everyday portability I use the BB gel case (repainted) and a Thai embroidered bag from ten thousand villages (non profit / fair trade store) which perfectly holds the PB and BB phone.