Only enable the quick-scope plugin's highlighting when using the f/F/t/T movements

context_quick_scope.vim

" Insert into your .vimrc after quick-scope is loaded.
" Obviously depends on <https://github.com/unblevable/quick-scope> being installed.

" enable quick_scope conditionally
let g:qs_enable = 0
let g:qs_enable_char_list = [ 'f', 'F', 't', 'T' ]

function! Quick_scope_selective(movement)
	let needs_disabling = 0
	if !g:qs_enable
		QuickScopeToggle
		redraw!
		let needs_disabling = 1
	endif
	let letter = nr2char(getchar())
	if needs_disabling
		QuickScopeToggle
	endif
	return a:movement . letter
endfunction

" quick_scope maps, operator-pending mode included (can do 'df' with hint)
for i in g:qs_enable_char_list
	execute 'noremap <expr> <silent>' . i . " Quick_scope_selective('". i . "')"
endfor

You're welcome, and thanks for making the "hack" :)