Integrating Views Accordion with VBO

Hi,

I'm trying to build a UI where user can select individual items and/or groups of items in a kind of treetable with check-boxes. So I was wondering if, for this purpose, there was a solution for using VBO with Views Accordion. The problem is that both are Views styles and you can choose only one of them at once from Views UI. I guess I will have to write a separate module or hack either VBO or Views Accordion witch are millefeuilles of complex form api, views handlers, theme hooks, alters and callbacks.

Does anyone know a mean for adding check-boxes to views accordion ? or is there an alternative to using VBO and Views Accordion ?

Thanks !