when i first started out in the va world after being a mmeber for so long i sended out 5 emails to 5 different reallive airlines in belgium/netherlands 1 never replied,3 gave a verry strait awnser(you are not allowed to use our name and logo and we will take correct actions against you iff you fail to comply) it was a longer mail but this is the short version, and 1 airline gave me the permission.
scroll to an earlyer post Mark also mentions legal action.
so there is evidence