I'm in for both.
I would suggest to those making comments about lag and UI, to take the current batch of videos (coming out of the BB Jam US event) as beta samples.
The dev devices in no way represent the current OS as it stands right now, and even the "showcase" devices at BB Jam are running a heavily stripped down version of the BB 10.
BB10 appears to take heavily from the N9 swipe concept because they too have placed a heavy focus on multitasking and one handed operation.
I don't expect miracles from Jolla's first device, and my purchase will primarily be idealistic, in support of the idea and concept.

Unless taken by surprise with the Jolla release, I anticipate the BB 10 device to be my primary handset