Custom messages for buffer names

[Thesola10]

I see that there is a special message when NERDTree is focused, but I would like to use NvimTree. I recognize that you can't just add support for all file browsers out there, so providing an option for custom messages depending on the buffer name could do. I'm thinking something like:

let g:vimsence_special_buffer_text = {
    \ 'NvimTree': 'Rummaging through files',
    \ 'startify': 'Doing nothing'
    \ }
let g:vimsence_special_buffer_details = 'Insert witty quote here'