I see! Yes, I was of the Nokia Communicator lineage, if you will, the horizontal keyboard. Though, I still use my E90 for notes because it has a solid hinging system, and only thought about the Nokia E7 for about 1/2 hr, as it felt flimsy back then. I only switched to the Nokia N9 when it couldn't connect any more. My sister on the other hand, had been an HP Ipaq user. So, i guess that's of the vertical keyboard type. Her LG was the horizontal type, but I think she's always missed the Ipaq.
I guess when it comes to keyboard vs. no keyboard, either vertical or horizontal will do.