Congrats on your most excellent purchase (IMNSHO)!
You'll find that the PB360+ is indeed very customizable. If I may suggest, take a look through some of the older threads and find out about fbreader 180. It's a user-developed "hack" of fbreader that allows for even more customization of the reader. Read about it, but I think it's a lot of what makes the PB360+ so nice.
A lot of people install themes on their devices. Again, there's a thread on them. I currently run the "five" theme on mine. It's very clean and I like the looks of the icons much better.
Oh, and you can set up your buttons to do various functions. I've got mine set so that almost every one forwards a page. That way, it doesn't matter which orientation I have the PB360 in, I can always easily forward the page.
All in all, you can do a lot of tweaks with the Pocketbook. But, the main thing is - it's an excellent reader. I, too, adore the hard cover! My hope is that Pocketbook never designs without it.
Again, congratulations on your purchase. As someone who's owned a PB360 (in some version) for almost two years, I may be a bit prejudiced. But - you've made the BEST choice!
Happy reading and yes, a very Merry Christmas to you!
Marilyn